Properly display YAML front matter in Markdown

See merge request !3072

Allow the initial admin to set a password

Closes #1980

See merge request !3068

This filter will detect YAML Front Matter and convert it to an HTML
table for prettier formatting.

Closes #1980

Factory cleanup

Related: https://gitlab.com/gitlab-org/gitlab-ce/issues/5880

See merge request !2847

Move `update_merge_request` ability to Developer

Closes #13663

See merge request !3099

Add a spec for WikiPipeline

Removes the specs from GollumTagsFilter that were more like integration
tests for the pipeline than unit tests of the filter.

See merge request !3054

In UsersController#calendar_activities, when Date isn't parsable, fallback to Date.today

For some reason, GoogleBot accesses `/u/:username/calendar_activities` without
a `:date` param, but then the view was trying to call `#to_s(:short)` which
doesn't exist on `nil`, leading to the following Sentry report:
https://sentry.gitlap.com/gitlab/gitlabcom/issues/1182/

See merge request !3074

Closes #13663

ctrl+enter on mac correctly submits forms

Closes #4177

See merge request !3089

Updated dropdown CSS

This is a start on #3279 by updating the CSS for the dropdown menu. This doesnt include any CSS for the title bar or filter field

![Screen_Shot_2016-03-04_at_12.23.49](/uploads/6f2047ec1b72974334fa56e6895a32be/Screen_Shot_2016-03-04_at_12.23.49.png)

See merge request !3092

[ci skip]

Added tabindex to filter field

Based on however I changed the tabindex of the search field so that it goes search field -> filter field & then back to browser default. I dont think we should override the default tabindex of the page too much.

Closes #3706 

See merge request !3093

Based on however I changed the tabindex of the search field so that it goes search field -> filter field & then back to browser default. I dont think we should override the default tabindex of the page too much
Closes #3706

This is a start on #3279 by updating the CSS for the dropdown menu. This doesnt include any CSS for the title bar or filter field

Invalidate cache for builds badge

This fixes cache issue with badges (we should not cache badge images).

Closes #13982

See merge request !3086

Closes #4177

Closes #13982

Increase the notes polling timeout over time

Originally by @roperzh at https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/2821

Fixes #13300 

See merge request !3071

SSH keys settings

Closes #13860

See merge request !3034

Prior, we were double-checking `@keys.any?`, and unnecessarily assigning
`is_admin` in a view where it wasn't needed.

Button transparent colours

Closes #13860

Update spring to 1.6.4 to fix support for Bundler 1.11

See merge request !3083