This removes a few dependencies! It was also rude to be using coveralls
0.8.9, considering 0.8.12 introduced support for GitLab CI :) Also
paves the way for updating mime-types to 3.0.

Coveralls Changelog:
https://github.com/lemurheavy/coveralls-ruby/releases

Simplecov Changelog:
https://github.com/colszowka/simplecov/blob/master/CHANGELOG.md

This was originally suggested by @ayufan and modified to be a bit
cleaner and use RequestStore instead of a regular Hash.

By caching the output of the two methods involved the number of queries
is reduced significantly. For example, for an issue with 200 notes (of
which 100 reference a number of merge requests) this cuts down the
amount of queries from around 6300 to around 3300.

Bundler Audit can now run check with the `—update` flag to update the
Ruby CVE repository before checking. This removes the need for two
separate commands in GitLab CI.

See the Changelog for more information:
https://github.com/rubysec/bundler-audit/blob/master/ChangeLog.md#050--2
015-02-28

Includes compatibility with Rails 5.

See the changelog for more information (https://github.com/modeset/teaspoon/blob/master/CHANGELOG.md).

Includes Rails 5 support.

See Changelog for more info
(https://github.com/rails/coffee-rails/blob/master/CHANGELOG.md#411-dece
mber-18-2015)

Includes support for Rails 5, bug fixes, and various additional
vulnerability checks.

See Changelog for more information
(https://github.com/presidentbeef/brakeman/blob/master/CHANGES)

Rails 5 compatibility release.

See the Changelog for more information:
https://github.com/rails/web-console/releases/tag/v2.3.0

Includes Rails 5 support.

See changelog for details:
https://github.com/bokmann/font-awesome-rails/releases/tag/v4.5.0.1

Includes Rails 5 support. See changelog for details
(https://github.com/flyerhzm/bullet/blob/master/CHANGELOG.md).

Discussed in #14233.

See [their releases](https://github.com/bbatsov/rubocop/releases) for
more info.

Changes:
- Enable DisplayCopNames for lint output.
- Default behavior for `Alias` changed, set to enforce `prefer_alias_method`.
- Enabling Rails cops changed to new syntax.
- Remove StyleGuides and move Descriptions to comments.
- Add missing cops.
- Add TODOs for cops that should be enabled in the future.
- Set TargetRubyVersion to 2.1.

# Conflicts:
#	Gemfile.lock

This builds on the changes introduced in
https://gitlab.com/gitlab-org/gitlab_git/merge_requests/72 and results
in merge requests with large diffs (e.g. due to them containing minified
CSS) loading much faster.

This reverts commit 01160fc0, reversing
changes made to 4bff9daf.

Add SCSS Lint, CSSComb config file, run SCSS Lint in GitLab CI, add documentation for SCSS Style Guide.

See !3069 for more information.

This includes gitlab-org/gitlab_git!69 and will hopefully solve
gitlab-org/gitlab-ce#13808.

Closes #6069

See https://groups.google.com/forum/#!msg/rubyonrails-security/ddY6HgqB2z4/we0RasMZIAAJ
and https://groups.google.com/forum/#!msg/rubyonrails-security/ly-IH-fxr_Q/WLoOhcMZIAAJ

In an effort to get the JS file size down, i've removed NGProgress and replaced with TurboLinks own loading indicator

Ref #13820

This reverts commit 53176717.

Conflicts:
	Gemfile.lock

Sometimes the output of Allocations.to_hash may contain garbage. See
https://gitlab.com/gitlab-org/allocations/commit/15d3a39f51392013dcf5f88dd21fab31201350ce
for more information.