diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 49d184a..507d345 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -1,6 +1,7 @@
 # Guideline for Issues
 
-- At first, See [FAQ](https://github.com/gitbucket/gitbucket/wiki/FAQ) and check issues whether there is a same question or request in the past.
+- At first, see [Wiki](https://github.com/gitbucket/gitbucket/wiki) and check issues whether there is a same question or request in the past.
 - If you can't find same question and report, send it to [gitter room](https://gitter.im/gitbucket/gitbucket) before raising an issue.
-- We can also support in Japaneses other than English at [gitter room for Japanese](https://gitter.im/gitbucket/gitbucket_ja).
+- We can also support in Japanese other than English at [gitter room for Japanese](https://gitter.im/gitbucket/gitbucket_ja).
 - Write an issue in English. At least, write subject in English.
+- The highest priority of GitBucket is the ease of installation and API compatibility with GitHub, so your feature request might be rejected if they go against those principles.
diff --git a/README.md b/README.md
index b9222ea..feadf3a 100644
--- a/README.md
+++ b/README.md
@@ -1,31 +1,35 @@
 GitBucket [![Gitter chat](https://badges.gitter.im/gitbucket/gitbucket.png)](https://gitter.im/gitbucket/gitbucket) [![Build Status](https://travis-ci.org/gitbucket/gitbucket.svg?branch=master)](https://travis-ci.org/gitbucket/gitbucket)
 =========
 
-GitBucket is a Git platform powered by Scala offering:
+GitBucket is a Git web platform powered by Scala offering:
+
 - Easy installation
+- Intuitive UI
 - High extensibility by plugins
 - API compatibility with GitHub
 
+You can try an [online demo](https://gitbucket.herokuapp.com/) *(ID: root / Pass: root)* of GitBucket, and also get the latest information at [GitBucket News](https://gitbucket.github.io/gitbucket-news/).
+
 Features
 --------
-The current version of GitBucket provides a basic features below:
+The current version of GitBucket provides many features such as:
 
-- Public / Private Git repository (http and ssh access)
+- Public / Private Git repositories (with http/https and ssh access)
 - GitLFS support
-- Repository viewer includes online file editor
-- Issues, Pull request and Wiki for repositories
-- Activity timeline and email notification
+- Repository viewer including an online file editor
+- Issues, Pull Requests and Wiki for repositories
+- Activity timeline and email notifications
 - Account and group management with LDAP integration
-- Plug-in system
+- a Plug-in system
 
 If you want to try the development version of GitBucket, see the [Developer's Guide](https://github.com/gitbucket/gitbucket/blob/master/doc/how_to_run.md).
 
 Installation
 --------
-GitBucket requires **Java8**. You have to install it if it is not already installed.
+GitBucket requires **Java8**. You have to install it, if it is not already installed.
 
 1. Download the latest **gitbucket.war** from [the releases page](https://github.com/gitbucket/gitbucket/releases) and run it by `java -jar gitbucket.war`.
-2. Go to `http://[hostname]:8080/` and log in with **root** / **root**.
+2. Go to `http://[hostname]:8080/` and log in with ID: **root** / Pass: **root**.
 
 You can specify following options:
 
@@ -45,24 +49,30 @@
 
 Plugins
 --------
-GitBucket has a plug-in system to allow extensions to GitBucket. We provide some official plug-ins:
+GitBucket has a plug-in system that allows extra functionality. Officially the following plug-ins are provided:
 
 - [gitbucket-gist-plugin](https://github.com/gitbucket/gitbucket-gist-plugin)
 - [gitbucket-emoji-plugin](https://github.com/gitbucket/gitbucket-emoji-plugin)
+- [gitbucket-pages-plugin](https://github.com/gitbucket/gitbucket-pages-plugin)
 
 You can find more plugins made by the community at [GitBucket community plugins](http://gitbucket-plugins.github.io/).
 
 Support
 --------
 
-- If you have any questions about GitBucket, send it to the [gitter room](https://gitter.im/gitbucket/gitbucket) before opening an issue.
-- Make sure check whether there is the same question or request in the past.
-- When raise a new issue, write at least the subject in **English**.
-- We can also provide support in Japanese at [gitter room for Japanese](https://gitter.im/gitbucket/gitbucket_ja).
-- The first priority of GitBucket is easy installation and API compatibility with GitHub, so we might reject if your request is against it.
+- If you have any questions about GitBucket, see [Wiki](https://github.com/gitbucket/gitbucket/wiki) and check issues whether there is a same question or request in the past.
+- If you can't find same question and report, send it to [gitter room](https://gitter.im/gitbucket/gitbucket) before raising an issue.
+- We can also provide support in Japanese other than English at [gitter room for Japanese](https://gitter.im/gitbucket/gitbucket_ja).
+- Write an issue in English. At least, write subject in English.
+- The highest priority of GitBucket is the ease of installation and API compatibility with GitHub, so your feature request might be rejected if they go against those principles.
 
 Release Notes
 -------------
+### 4.12 - 30 Apr 2017
+- [Gist plug-in](https://github.com/gitbucket/gitbucket-gist-plugin) provides JavaScript to embed snippet
+- Dropdown menu filter in the branch comparing page
+- Caution for the embedded H2 database
+
 ### 4.11 - 1 Apr 2017
 - Deploy keys support
 - Auto generate avatar images
diff --git a/build.sbt b/build.sbt
index 869ec54..f7efb43 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,6 +1,6 @@
 val Organization = "io.github.gitbucket"
 val Name = "gitbucket"
-val GitBucketVersion = "4.11.0"
+val GitBucketVersion = "4.12.0"
 val ScalatraVersion = "2.5.0"
 val JettyVersion = "9.4.3.v20170317"
 
@@ -10,7 +10,7 @@
 organization := Organization
 name := Name
 version := GitBucketVersion
-scalaVersion := "2.12.1"
+scalaVersion := "2.12.2"
 
 // dependency settings
 resolvers ++= Seq(
@@ -60,7 +60,7 @@
 )
 
 // Compiler settings
-scalacOptions := Seq("-deprecation", "-language:postfixOps")
+scalacOptions := Seq("-deprecation", "-language:postfixOps", "-opt:l:method")
 javacOptions in compile ++= Seq("-target", "8", "-source", "8")
 javaOptions in Jetty += "-Dlogback.configurationFile=/logback-dev.xml"
 
diff --git a/doc/how_to_run.md b/doc/how_to_run.md
index 77c1f5d..9db0789 100644
--- a/doc/how_to_run.md
+++ b/doc/how_to_run.md
@@ -1,18 +1,24 @@
 How to run from the source tree
 ========
 
+Install [sbt](http://www.scala-sbt.org/index.html) at first.
+
+```
+$ brew install sbt
+```
+
 Run for Development
 --------
 
-If you want to test GitBucket, input following command at the root directory of the source tree.
+If you want to test GitBucket, type the following command in the root directory of the source tree.
 
 ```
 $ sbt ~jetty:start
 ```
 
-Then access to `http://localhost:8080/` by your browser. The default administrator account is `root` and password is `root`.
+Then access `http://localhost:8080/` in your browser. The default administrator account is `root` and password is `root`.
 
-Source code modification is detected and reloaded automatically. You can modify logging configuration by editing `src/main/resources/logback-dev.xml`.
+Source code modifications are detected and a reloaded happens automatically. You can modify the logging configuration by editing `src/main/resources/logback-dev.xml`.
 
 Build war file
 --------
@@ -25,7 +31,7 @@
 
 `gitbucket_2.12-x.x.x.war` is generated into `target/scala-2.12`.
 
-To build executable war file, run
+To build an executable war file, run
 
 ```
 $ sbt executable
@@ -35,8 +41,8 @@
 
 Run tests spec
 ---------
-To run the full serie of tests, run the following command:
+To run the full series of tests, run the following command:
 
 ```
-sbt test
+$ sbt test
 ```
diff --git a/doc/notification.md b/doc/notification.md
index 90a88bb..f9fb1e0 100644
--- a/doc/notification.md
+++ b/doc/notification.md
@@ -1,7 +1,7 @@
 Notification Email
 ========
 
-GitBucket sends email to target users by enabling the notification email by an administrator.
+GitBucket can send email notification to users if this feature is enabled by an administrator.
 
 The timing of the notification are as follows:
 
@@ -20,4 +20,4 @@
 * collaborators
 * participants
 
-However, the operation in person is excluded from the target.
+However, the person performing the operation is excluded from the notification.
diff --git a/doc/release.md b/doc/release.md
index 682dc88..d417cb7 100644
--- a/doc/release.md
+++ b/doc/release.md
@@ -34,8 +34,6 @@
 Generate release files
 --------
 
-Note: Release operation requires [Ant](http://ant.apache.org/) and [Maven](https://maven.apache.org/).
-
 ### Make release war file
 
 Run `sbt executable`. The release war file and fingerprint are generated into `target/executable/gitbucket.war`.
@@ -52,4 +50,12 @@
 $ sbt publish-signed
 ```
 
-Then operate release sequence at https://oss.sonatype.org/.
+Then logged-in https://oss.sonatype.org/ and delete following files from the staging repository:
+
+- gitbucket_2.12-x.x.x.war
+- gitbucket_2.12-x.x.x.war.asc
+- gitbucket_2.12-x.x.x.war.asc.md5
+- gitbucket_2.12-x.x.x.war.asc.sha1
+- gitbucket_2.12-x.x.x.war.md5
+
+At last, close and release the repository.
diff --git a/src/main/java/JettyLauncher.java b/src/main/java/JettyLauncher.java
index bae7ae1..01245c2 100644
--- a/src/main/java/JettyLauncher.java
+++ b/src/main/java/JettyLauncher.java
@@ -1,4 +1,9 @@
+import org.eclipse.jetty.server.ConnectionFactory;
+import org.eclipse.jetty.server.Connector;
+import org.eclipse.jetty.server.Handler;
+import org.eclipse.jetty.server.HttpConnectionFactory;
 import org.eclipse.jetty.server.Server;
+import org.eclipse.jetty.server.handler.StatisticsHandler;
 import org.eclipse.jetty.webapp.WebAppContext;
 
 import java.io.File;
@@ -8,6 +13,8 @@
 
 public class JettyLauncher {
     public static void main(String[] args) throws Exception {
+        System.setProperty("java.awt.headless", "true");
+
         String host = null;
         int port = 8080;
         InetSocketAddress address = null;
@@ -60,6 +67,15 @@
 //        connector.setPort(port);
 //        server.addConnector(connector);
 
+        // Disabling Server header
+        for (Connector connector : server.getConnectors()) {
+            for (ConnectionFactory factory : connector.getConnectionFactories()) {
+                if (factory instanceof HttpConnectionFactory) {
+                    ((HttpConnectionFactory) factory).getHttpConfiguration().setSendServerVersion(false);
+                }
+            }
+        }
+
         WebAppContext context = new WebAppContext();
 
         File tmpDir;
@@ -91,7 +107,9 @@
             context.setInitParameter("org.scalatra.ForceHttps", "true");
         }
 
-        server.setHandler(context);
+        Handler handler = addStatisticsHandler(context);
+
+        server.setHandler(handler);
         server.setStopAtShutdown(true);
         server.setStopTimeout(7_000);
         server.start();
@@ -120,4 +138,12 @@
         }
         dir.delete();
     }
+
+    private static Handler addStatisticsHandler(Handler handler) {
+        // The graceful shutdown is implemented via the statistics handler.
+        // See the following: https://bugs.eclipse.org/bugs/show_bug.cgi?id=420142
+        final StatisticsHandler statisticsHandler = new StatisticsHandler();
+        statisticsHandler.setHandler(handler);
+        return statisticsHandler;
+    }
 }
diff --git a/src/main/scala/gitbucket/core/GitBucketCoreModule.scala b/src/main/scala/gitbucket/core/GitBucketCoreModule.scala
index dd8665d..b33a909 100644
--- a/src/main/scala/gitbucket/core/GitBucketCoreModule.scala
+++ b/src/main/scala/gitbucket/core/GitBucketCoreModule.scala
@@ -31,5 +31,6 @@
   new Version("4.10.0"),
   new Version("4.11.0",
     new LiquibaseMigration("update/gitbucket-core_4.11.xml")
-  )
+  ),
+  new Version("4.12.0")
 )
diff --git a/src/main/scala/gitbucket/core/api/ApiRepository.scala b/src/main/scala/gitbucket/core/api/ApiRepository.scala
index 9c7377c..a6c5bd5 100644
--- a/src/main/scala/gitbucket/core/api/ApiRepository.scala
+++ b/src/main/scala/gitbucket/core/api/ApiRepository.scala
@@ -37,7 +37,7 @@
       name           = repository.repositoryName,
       full_name      = s"${repository.userName}/${repository.repositoryName}",
       description    = repository.description.getOrElse(""),
-      watchers       = 0,
+      watchers       = watchers,
       forks          = forkedCount,
       `private`      = repository.isPrivate,
       default_branch = repository.defaultBranch,
diff --git a/src/main/scala/gitbucket/core/controller/IndexController.scala b/src/main/scala/gitbucket/core/controller/IndexController.scala
index 9d0316f..524f26f 100644
--- a/src/main/scala/gitbucket/core/controller/IndexController.scala
+++ b/src/main/scala/gitbucket/core/controller/IndexController.scala
@@ -26,13 +26,13 @@
     "password" -> trim(label("Password", text(required)))
   )(SignInForm.apply)
 
-  val searchForm = mapping(
-    "query"      -> trim(text(required)),
-    "owner"      -> trim(text(required)),
-    "repository" -> trim(text(required))
-  )(SearchForm.apply)
-
-  case class SearchForm(query: String, owner: String, repository: String)
+//  val searchForm = mapping(
+//    "query"      -> trim(text(required)),
+//    "owner"      -> trim(text(required)),
+//    "repository" -> trim(text(required))
+//  )(SearchForm.apply)
+//
+//  case class SearchForm(query: String, owner: String, repository: String)
 
 
   get("/"){
@@ -163,7 +163,7 @@
 
   get("/search"){
     val query = params.getOrElse("query", "").trim.toLowerCase
-    val visibleRepositories = getVisibleRepositories(context.loginAccount, None)
+    val visibleRepositories = getVisibleRepositories(context.loginAccount, repositoryUserName = None, withoutPhysicalInfo = true)
     val repositories = visibleRepositories.filter { repository =>
       repository.name.toLowerCase.indexOf(query) >= 0 || repository.owner.toLowerCase.indexOf(query) >= 0
     }
diff --git a/src/main/scala/gitbucket/core/controller/RepositorySettingsController.scala b/src/main/scala/gitbucket/core/controller/RepositorySettingsController.scala
index c6f580f..4fc7974 100644
--- a/src/main/scala/gitbucket/core/controller/RepositorySettingsController.scala
+++ b/src/main/scala/gitbucket/core/controller/RepositorySettingsController.scala
@@ -40,7 +40,7 @@
   )
 
   val optionsForm = mapping(
-    "repositoryName"    -> trim(label("Repository Name"    , text(required, maxlength(100), identifier, renameRepositoryName))),
+    "repositoryName"    -> trim(label("Repository Name"    , text(required, maxlength(100), repository, renameRepositoryName))),
     "description"       -> trim(label("Description"        , optional(text()))),
     "isPrivate"         -> trim(label("Repository Type"    , boolean())),
     "issuesOption"      -> trim(label("Issues Option"      , text(required, featureOption))),
@@ -139,6 +139,12 @@
           FileUtils.moveDirectory(dir, getLfsDir(repository.owner, form.repositoryName))
         }
       }
+      // Move attached directory
+      defining(getAttachedDir(repository.owner, repository.name)){ dir =>
+        if(dir.isDirectory) {
+          FileUtils.moveDirectory(dir, getAttachedDir(repository.owner, form.repositoryName))
+        }
+      }
       // Delete parent directory
       FileUtil.deleteDirectoryIfEmpty(getRepositoryFilesDir(repository.owner, repository.name))
 
@@ -352,6 +358,12 @@
             FileUtils.moveDirectory(dir, getLfsDir(form.newOwner, repository.name))
           }
         }
+        // Move attached directory
+        defining(getAttachedDir(repository.owner, repository.name)){ dir =>
+          if(dir.isDirectory) {
+            FileUtils.moveDirectory(dir, getAttachedDir(form.newOwner, repository.name))
+          }
+        }
         // Delere parent directory
         FileUtil.deleteDirectoryIfEmpty(getRepositoryFilesDir(repository.owner, repository.name))
 
diff --git a/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala b/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
index 23eb612..6fc90d7 100644
--- a/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
+++ b/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
@@ -670,12 +670,13 @@
 
   private def archiveRepository(name: String, suffix: String, repository: RepositoryService.RepositoryInfo): Unit = {
     val revision = name.stripSuffix(suffix)
-
-    val filename = repository.name + "-" +
-      (if(revision.length == 40) revision.substring(0, 10) else revision).replace('/', '-') + suffix
-
+    
     using(Git.open(getRepositoryDir(repository.owner, repository.name))){ git =>
-      val revCommit = JGitUtil.getRevCommitFromId(git, git.getRepository.resolve(revision))
+      val oid = git.getRepository.resolve(revision)
+      val revCommit = JGitUtil.getRevCommitFromId(git, oid)
+      val sha1 = oid.getName()     
+      val repositorySuffix = (if(sha1.startsWith(revision)) sha1 else revision).replace('/','-')
+      val filename = repository.name + "-" + repositorySuffix + suffix
 
       contentType = "application/octet-stream"
       response.setHeader("Content-Disposition", s"attachment; filename=${filename}")
@@ -683,6 +684,7 @@
 
       git.archive
          .setFormat(suffix.tail)
+         .setPrefix(repository.name + "-" + repositorySuffix + "/")
          .setTree(revCommit)
          .setOutputStream(response.getOutputStream)
          .call()
diff --git a/src/main/scala/gitbucket/core/model/Milestone.scala b/src/main/scala/gitbucket/core/model/Milestone.scala
index 81c4f2b..491fefd 100644
--- a/src/main/scala/gitbucket/core/model/Milestone.scala
+++ b/src/main/scala/gitbucket/core/model/Milestone.scala
@@ -9,10 +9,10 @@
   class Milestones(tag: Tag) extends Table[Milestone](tag, "MILESTONE") with MilestoneTemplate {
     override val milestoneId = column[Int]("MILESTONE_ID", O AutoInc)
     val title = column[String]("TITLE")
-    val description = column[String]("DESCRIPTION")
-    val dueDate = column[java.util.Date]("DUE_DATE")
-    val closedDate = column[java.util.Date]("CLOSED_DATE")
-    def * = (userName, repositoryName, milestoneId, title, description.?, dueDate.?, closedDate.?) <> (Milestone.tupled, Milestone.unapply)
+    val description = column[Option[String]]("DESCRIPTION")
+    val dueDate = column[Option[java.util.Date]]("DUE_DATE")
+    val closedDate = column[Option[java.util.Date]]("CLOSED_DATE")
+    def * = (userName, repositoryName, milestoneId, title, description, dueDate, closedDate) <> (Milestone.tupled, Milestone.unapply)
 
     def byPrimaryKey(owner: String, repository: String, milestoneId: Int) = byMilestone(owner, repository, milestoneId)
     def byPrimaryKey(userName: Rep[String], repositoryName: Rep[String], milestoneId: Rep[Int]) = byMilestone(userName, repositoryName, milestoneId)
diff --git a/src/main/scala/gitbucket/core/service/MilestonesService.scala b/src/main/scala/gitbucket/core/service/MilestonesService.scala
index 1e95856..276aa7c 100644
--- a/src/main/scala/gitbucket/core/service/MilestonesService.scala
+++ b/src/main/scala/gitbucket/core/service/MilestonesService.scala
@@ -21,7 +21,7 @@
   def updateMilestone(milestone: Milestone)(implicit s: Session): Unit =
     Milestones
       .filter (t =>  t.byPrimaryKey(milestone.userName, milestone.repositoryName, milestone.milestoneId))
-      .map    (t => (t.title, t.description.?, t.dueDate.?, t.closedDate.?))
+      .map    (t => (t.title, t.description, t.dueDate, t.closedDate))
       .update (milestone.title, milestone.description, milestone.dueDate, milestone.closedDate)
 
   def openMilestone(milestone: Milestone)(implicit s: Session): Unit =
diff --git a/src/main/scala/gitbucket/core/service/RepositoryService.scala b/src/main/scala/gitbucket/core/service/RepositoryService.scala
index 3640f1c..3580833 100644
--- a/src/main/scala/gitbucket/core/service/RepositoryService.scala
+++ b/src/main/scala/gitbucket/core/service/RepositoryService.scala
@@ -262,11 +262,19 @@
           JGitUtil.getRepositoryInfo(repository.userName, repository.repositoryName)
         },
         repository,
-        getForkedCount(
-          repository.originUserName.getOrElse(repository.userName),
-          repository.originRepositoryName.getOrElse(repository.repositoryName)
-        ),
-        getRepositoryManagers(repository.userName))
+        if(withoutPhysicalInfo){
+          -1
+        } else {
+          getForkedCount(
+            repository.originUserName.getOrElse(repository.userName),
+            repository.originRepositoryName.getOrElse(repository.repositoryName)
+          )
+        },
+        if(withoutPhysicalInfo){
+          Nil
+        } else {
+          getRepositoryManagers(repository.userName)
+        })
     }
   }
 
@@ -300,7 +308,7 @@
       case None => Repositories filter(_.isPrivate === false.bind)
     }).filter { t =>
       repositoryUserName.map { userName => t.userName === userName.bind } getOrElse LiteralColumn(true)
-    }.sortBy(_.lastActivityDate desc).list.map{ repository =>
+    }.sortBy(_.lastActivityDate desc).list.map { repository =>
       new RepositoryInfo(
         if(withoutPhysicalInfo){
           new JGitUtil.RepositoryInfo(repository.userName, repository.repositoryName)
@@ -308,11 +316,19 @@
           JGitUtil.getRepositoryInfo(repository.userName, repository.repositoryName)
         },
         repository,
-        getForkedCount(
-          repository.originUserName.getOrElse(repository.userName),
-          repository.originRepositoryName.getOrElse(repository.repositoryName)
-        ),
-        getRepositoryManagers(repository.userName))
+        if(withoutPhysicalInfo){
+          -1
+        } else {
+          getForkedCount(
+            repository.originUserName.getOrElse(repository.userName),
+            repository.originRepositoryName.getOrElse(repository.repositoryName)
+          )
+        },
+        if(withoutPhysicalInfo) {
+          Nil
+        } else {
+          getRepositoryManagers(repository.userName)
+        })
     }
   }
 
diff --git a/src/main/scala/gitbucket/core/servlet/GitAuthenticationFilter.scala b/src/main/scala/gitbucket/core/servlet/GitAuthenticationFilter.scala
index 7e0ba97..2947fde 100644
--- a/src/main/scala/gitbucket/core/servlet/GitAuthenticationFilter.scala
+++ b/src/main/scala/gitbucket/core/servlet/GitAuthenticationFilter.scala
@@ -51,21 +51,21 @@
 
   private def pluginRepository(request: HttpServletRequest, response: HttpServletResponse, chain: FilterChain,
                                settings: SystemSettings, isUpdating: Boolean, filter: GitRepositoryFilter): Unit = {
-    implicit val r = request
+    Database() withSession { implicit session =>
+      val account = for {
+        auth <- Option(request.getHeader("Authorization"))
+        Array(username, password) = AuthUtil.decodeAuthHeader(auth).split(":", 2)
+        account <- authenticate(settings, username, password)
+      } yield {
+        request.setAttribute(Keys.Request.UserName, account.userName)
+        account
+      }
 
-    val account = for {
-      auth <- Option(request.getHeader("Authorization"))
-      Array(username, password) = AuthUtil.decodeAuthHeader(auth).split(":", 2)
-      account <- authenticate(settings, username, password)
-    } yield {
-      request.setAttribute(Keys.Request.UserName, account.userName)
-      account
-    }
-
-    if(filter.filter(request.gitRepositoryPath, account.map(_.userName), settings, isUpdating)){
-      chain.doFilter(request, response)
-    } else {
-      AuthUtil.requireAuth(response)
+      if (filter.filter(request.gitRepositoryPath, account.map(_.userName), settings, isUpdating)) {
+        chain.doFilter(request, response)
+      } else {
+        AuthUtil.requireAuth(response)
+      }
     }
   }
 
diff --git a/src/main/twirl/gitbucket/core/admin/system.scala.html b/src/main/twirl/gitbucket/core/admin/system.scala.html
index c78ad6d..4234243 100644
--- a/src/main/twirl/gitbucket/core/admin/system.scala.html
+++ b/src/main/twirl/gitbucket/core/admin/system.scala.html
@@ -1,4 +1,5 @@
 @(info: Option[Any])(implicit context: gitbucket.core.controller.Context)
+@import gitbucket.core.util.DatabaseConfig
 @gitbucket.core.html.main("System settings"){
   @gitbucket.core.admin.html.menu("system"){
     @gitbucket.core.helper.html.information(info)
@@ -20,7 +21,17 @@
             </tr>
             <tr>
               <td>DATABASE_URL</td>
-              <td>@gitbucket.core.util.DatabaseConfig.url</td>
+              @if(DatabaseConfig.url.startsWith("jdbc:h2:")) {
+              <td class="danger">
+                <p>@gitbucket.core.util.DatabaseConfig.url</p>
+                <p>
+                  Your GitBucket is running on embedded H2 database.
+                  Recommend to <a href="https://github.com/gitbucket/gitbucket/wiki/External-database-configuration">configure to use external database</a> if you would like to use GitBucket for important purpose.
+                </p>
+              </td>
+              }else{
+                <td>@gitbucket.core.util.DatabaseConfig.url</td>
+              }
             </tr>
           </table>
           <!--====================================================================-->
diff --git a/src/main/twirl/gitbucket/core/dashboard/sidebar.scala.html b/src/main/twirl/gitbucket/core/dashboard/sidebar.scala.html
index faf5d5a..ec18663 100644
--- a/src/main/twirl/gitbucket/core/dashboard/sidebar.scala.html
+++ b/src/main/twirl/gitbucket/core/dashboard/sidebar.scala.html
@@ -49,10 +49,7 @@
   $('#filter-box').keyup(function(){
     var inputVal = $('#filter-box').val();
     $.each($('li.repo-link a'), function(index, elem) {
-      console.log(inputVal);
-      console.log(elem.text.trim());
-      console.log(elem.text.trim().lastIndexOf(inputVal, 0));
-      if (!inputVal || !elem.text.trim() || elem.text.trim().indexOf(inputVal) >= 0) {
+      if ( !inputVal || !elem.text.trim() || elem.text.trim().toLowerCase().indexOf(inputVal.toLowerCase()) >= 0 ) {
         $(elem).parent().show();
       } else {
         $(elem).parent().hide();
diff --git a/src/main/twirl/gitbucket/core/helper/branchcontrol.scala.html b/src/main/twirl/gitbucket/core/helper/branchcontrol.scala.html
index 09e3feb..38a5d93 100644
--- a/src/main/twirl/gitbucket/core/helper/branchcontrol.scala.html
+++ b/src/main/twirl/gitbucket/core/helper/branchcontrol.scala.html
@@ -31,7 +31,7 @@
     $('#branch-control-input').keyup(function() {
       var inputVal = $('#branch-control-input').val();
       $.each($('#branch-control-input').parent().parent().find('a'), function(index, elem) {
-        if (!inputVal || !elem.text.trim() || elem.text.trim().lastIndexOf(inputVal, 0) >= 0) {
+        if (!inputVal || !elem.text.trim() || elem.text.trim().toLowerCase().indexOf(inputVal.toLowerCase()) >= 0) {
           $(elem).parent().show();
         } else {
           $(elem).parent().hide();
diff --git a/src/main/twirl/gitbucket/core/helper/dropdown.scala.html b/src/main/twirl/gitbucket/core/helper/dropdown.scala.html
index 2becc79..a98c53c 100644
--- a/src/main/twirl/gitbucket/core/helper/dropdown.scala.html
+++ b/src/main/twirl/gitbucket/core/helper/dropdown.scala.html
@@ -32,7 +32,7 @@
   $('#@{filter}-input').keyup(function() {
     var inputVal = $('#@{filter}-input').val();
     $.each($('#@{filter}-input').parent().parent().find('a'), function(index, elem) {
-      if (!inputVal || !elem.text.trim() || elem.text.trim().lastIndexOf(inputVal, 0) >= 0) {
+      if ( !inputVal || !elem.text.trim() || elem.text.trim().toLowerCase().indexOf(inputVal.toLowerCase()) >=0 ) {
         $(elem).parent().show();
       } else {
         $(elem).parent().hide();
diff --git a/src/main/twirl/gitbucket/core/pulls/compare.scala.html b/src/main/twirl/gitbucket/core/pulls/compare.scala.html
index d390c17..17a399a 100644
--- a/src/main/twirl/gitbucket/core/pulls/compare.scala.html
+++ b/src/main/twirl/gitbucket/core/pulls/compare.scala.html
@@ -221,3 +221,27 @@
   }
 });
 </script>
+<script>
+  function dropdownFilter(dropdownItem,placeHolder,id) {
+    $('<li><input id="' + id + '" type="text" class="form-control input-sm dropdown-filter-input" placeholder="' + placeHolder + '"/></li>')
+      .insertBefore($("li:has(a" + dropdownItem + "):first"));
+    $('#'+id).keyup(function() {
+      var inputVal = $('#'+id).val();
+      $.each($('#'+id).parent().parent().find('a'), function(index, elem) {
+        if (!inputVal || !elem.text.trim() || elem.text.trim().toLowerCase().indexOf(inputVal.toLowerCase()) >= 0) {
+          $(elem).parent().show();
+        } else {
+          $(elem).parent().hide();
+        }
+      });
+    });
+  }
+
+  $(function(){
+    dropdownFilter('.origin-owner', 'Find Repository...', 'origin-owner-control-input');
+    dropdownFilter('.origin-branch','Find Branch...',     'origin-branch-control-input');
+    dropdownFilter('.forked-owner', 'Find Repository...', 'forked-owner-control-input');
+    dropdownFilter('.forked-branch','Find Branch...',     'forked-branch-control-input');
+  });
+</script>
+
diff --git a/src/main/webapp/assets/common/css/gitbucket.css b/src/main/webapp/assets/common/css/gitbucket.css
index c2b225d..337b989 100644
--- a/src/main/webapp/assets/common/css/gitbucket.css
+++ b/src/main/webapp/assets/common/css/gitbucket.css
@@ -342,6 +342,8 @@
 
 ul.dropdown-menu {
   padding: 2px 0;
+  overflow: auto;
+  max-height: 100vh; 
 }
 
 ul.dropdown-menu li {
@@ -556,6 +558,7 @@
   background-color: transparent;
   padding: 2px;
   margin: 0px;
+  white-space: pre-wrap;
 }
 
 #repository-url {