(refs #1618)Fix error message position

(refs #1618)Check conflict on the online editor in validation

Fix layout of comment form

(refs #1618)Reject online editing if new commits have been pushed already

(refs #1623)Copy attached / LFS files when repository is forked

Merge pull request #1617 from gitbucket/feature/external-config ...

Make all settings configurable by system property or environment variable

Delete unused methods

Make all settings configurable by system property or environment variable

Update version to 4.14.0-SNAPSHOT

Tweak group editing form template

Fix TODO

Small fix of group editing form

Fix regression in group editing in admin console

Share group creating / editing form template

Add sidebar to group configuration

Fix html markup

Refactor account level web hook entirely

Move account level web hook settings to account settings

Update CSS

fix .travis.yml ...

- install java9 explicitly https://github.com/travis-ci/travis-ci/issues/7944
- restore main java8 build (bug or change specifications? https://twitter.com/xuwei_k/status/873104018100244480 )
- "sudo apt-get install libaio1" fail. use apt addons https://github.com/travis-ci/apt-package-whitelist/pull/3698

(refs #1620) Bump AdminLTE to 2.3.11

Merge pull request #1488 from kounoike/pr-add-account-webhook ...

Add account(group/user)'s webhooks feature.

Fix compilation error

Merge branch 'master' into pr-add-account-webhook

Merge pull request #1616 from imeszaros/issue-priorities ...

Issue priorities

Eliminate manual emtpy to none conversion. This may close #1396

Having a default priority is now optional.

Show errors related to priority description.

Priority description is now optional.

Prefer external styles instead of inline.