Fix accidentally removed class name
Reannotate
Add z-index to flash message
A little improvement

1. Replace params key 'q' with 'extended_sha1'. A extended SHA1 syntax is explained in 'man gitrevisions'.
2. Change the placeholder of looking for commit.
3. Change the label of ref filter.
Merge pull request #4829 from hiroponz/render-not-found-when-failing-to-look-for-commit

Render not found when failing to look for commit
Merge pull request #4826 from amouhzi/patch-1

Fix bug in ace-src-noconflict with Relative url.
Fix tests after can_create_team was removed
Increase estimated number of GitLab installations
Add 'hooks' to path blacklist.
Merge branch '25_000_installations' of /home/git/repositories/gitlab/gitlabhq
bind unicorn listener to 127.0.0.1

otherwise it will listen on 0.0.0.0
Recreate project satellite on rename or transfer
Show iids for issues/mr in email subject
Show reopen milestone button if milestone was closed
Added assets:precompile in upgrade guide 5.4 -> 6.0
Merge pull request #4847 from Stayallive/patch-1

Added assets:precompile in upgrade guide 5.4 -> 6.0
Fix GitLab Shell version check
Fix the `service gitlab restart` command

This commit addresses two related issues:
- Sidekiq should shut down completely before we restart it;
- If we restart unicorn with USR2 we need to kill the old master and
  worker processes.
People like Karen and myself are confused by the placeholder, it seems like you don't have to change the master value. Also the to and from should be more prominent.
Select files with diff filter for graph log