Correctly updates the on-screen CI text feedback

Short commit instead of long commit sha

Removed page refresh - instead clicking takes to the builds tab

Removing icon changes because refresh.

Changes `:not_found` to `nil`

When a build status changes a notification will popup.
Fixes #10851

Add side padding to content-list if inside panel
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Fixes #14367, #14349

See merge request !3273

Use relative links in `doc`, fix broken generated HTML links

Links like (doc/web_hooks/web_hooks.md) work in the GitLab source code
web interface, but the HTML generator produces broken links in the `doc`
subdirectories:  
http://doc.gitlab.com/ce/hooks/doc/web_hooks/web_hooks.html  
instead of the right one  
http://doc.gitlab.com/ce/web_hooks/web_hooks.html  
in  
http://doc.gitlab.com/ce/hooks/custom_hooks.html.

Fixes #14338 


See merge request !3261

Remove CI duplication.



See merge request !3290

Improve award emoji test reliability by checking that the emoji is displayed before the search field is focused

See merge request !3288

Check push permissions only when pushing directly to target branch.

Fixes #14374 

See merge request !3280

before the search field is focused

Fix bug causing dropdown to get cut off in project page

closes #14336 

### Before
![Screen_Shot_2016-03-16_at_11.30.40_PM](/uploads/9f8dd10f0627cdfbd49d7127b233b105/Screen_Shot_2016-03-16_at_11.30.40_PM.png)

![Screen_Shot_2016-03-16_at_11.30.53_PM](/uploads/6dfe64d68867d158a11be7e74cbd1520/Screen_Shot_2016-03-16_at_11.30.53_PM.png)


### After
![Screen_Shot_2016-03-16_at_11.30.14_PM](/uploads/2b87cc17522e8a425a97a78b36982873/Screen_Shot_2016-03-16_at_11.30.14_PM.png)

See merge request !3257

Fix inconsistency in the header of issue and merge request pages

closes #13550 

# For Issue Page

### Before
![Screen_Shot_2016-03-17_at_8.46.59_PM](/uploads/ede7f2b98395362ae87e6258cc10520a/Screen_Shot_2016-03-17_at_8.46.59_PM.png)

### After
![Screen_Shot_2016-03-17_at_8.48.56_PM](/uploads/da7adf17cb397ddc0677a6a5e8033b8e/Screen_Shot_2016-03-17_at_8.48.56_PM.png)

# For Merge request Page

### Before
![Screen_Shot_2016-03-17_at_8.45.45_PM](/uploads/10137827c05c8166a0aa429687e50d1b/Screen_Shot_2016-03-17_at_8.45.45_PM.png)

### After
![Screen_Shot_2016-03-17_at_8.45.01_PM](/uploads/92151c03cfe29b71090a1e0ad31abd6e/Screen_Shot_2016-03-17_at_8.45.01_PM.png)


See merge request !3279

Fixed alignment of download dropdown

With the new dropdown CSS - some dropdowns might look a bit odd

## Previously

![Screen_Shot_2016-03-16_at_11.46.04](/uploads/c1a8fc95ed4410de35d7bd5caedf28f5/Screen_Shot_2016-03-16_at_11.46.04.png)

## Now

![Screen_Shot_2016-03-16_at_11.45.26](/uploads/998637fe0872b2e826a8c17d183499dc/Screen_Shot_2016-03-16_at_11.45.26.png)

See merge request !3245

Fixed filter spacing

Closes #14350

![Screen_Shot_2016-03-17_at_10.21.33](/uploads/5b8f39134cc90ce1dd6565f665a39838/Screen_Shot_2016-03-17_at_10.21.33.png)

See merge request !3267

Bump Git version requirement to 2.7.4

[ci skip]

See merge request !3281

Edited timeago text on comments

Unified the 'edited text' to be the same in descriptions and comments

Closes #5538 

See merge request !3063

Revert color for links inside gray areas

**Before**

![Screen_Shot_2016-03-17_at_12.23.17_PM](/uploads/55e518721d83c3bfc42edba3e97ec44d/Screen_Shot_2016-03-17_at_12.23.17_PM.png)

**After**

![Screen_Shot_2016-03-17_at_12.23.03_PM](/uploads/08fbf8e9139e4eadf191102cffd29617/Screen_Shot_2016-03-17_at_12.23.03_PM.png)

Reverts !3147

See merge request !3276

Hide builds from Project's settings when the feature is disabled

Resolves https://gitlab.com/gitlab-org/gitlab-ce/issues/13944

See merge request !3220

Cache project avatars stored in Git

Related issue: https://gitlab.com/gitlab-org/gitlab-ce/issues/14363

See merge request !3272

The avatar logic has been moved from Project to Repository as this makes
caching easier. The logic itself in turn has been changed so that the
logo file names are cached in Redis. This cache is flushed upon pushing
a commit but _only_ if:

1. The commit was pushed to the default branch
2. The commit actually changes any of the logo files

If no branch or commit is given the cache is flushed anyway, this
ensures that calling Repository#expire_cache without any arguments still
flushes the avatar cache (e.g. this is used when removing a project).

Fixes gitlab-org/gitlab-ce#14363