This allows us to take advantage of
https://gitlab.com/gitlab-org/gitlab_git/merge_requests/121.

If `git gc` runs and `Repository` has an instance to `Rugged::Repository`, a
bug in libgit2 may cause the instance to return a stale value or a missing
branch. This change not only optimizes the branch lookup so we don't have
to iterate through every branch, but it also works around the `git gc`
issue by forcing a repository reload every time `Repository#find_branch`
is called.

See: https://github.com/libgit2/libgit2/issues/1534

Closes #15392, #21470

Changelog: https://git.io/v6PnV

Fixes gitlab-org/gitlab-ce#21025 and gitlab-org/gitlab-ce#21017

- Return only slash commands that make sense for the current noteable
- Allow slash commands decription to be dynamic

Other improvements:

- Add permission checks in slash commands definition
- Use IssuesFinder and MergeRequestsFinder
- Use next if instead of a unless block, and use splat operator instead of flatten
Signed-off-by: NRémy Coutable <remy@rymai.me>

More information available at: http://weblog.rubyonrails.org/2016/8/11/Rails-5-0-0-1-4-2-7-2-and-3-2-22-3-have-been-released/

Changelog: https://github.com/ruby-grape/grape/blob/v0.15.0/CHANGELOG.md

Works toward #18226.

Bug fixes and compatibility with Rails 5.

Changelog: https://github.com/newrelic/rpm/blob/master/CHANGELOG

This includes support for Rails 5 without deprecations warnings.

Changelog: https://github.com/DatabaseCleaner/database_cleaner/blob/master/History.rdoc#153-2016-04-22

Removes methods that were deprecated in Rails 5.

Changelog: https://github.com/flyerhzm/bullet/blob/master/CHANGELOG.md#520

Fixed issue with resolve buttons always being visible - even when not logged in

This reverts merge request !5375

Removes methods that were deprecated in Rails 5.

Changelog: https://github.com/gazay/gon/compare/3a2b56d...9d89bc9

This reverts commit 9065f9c5, reversing
changes made to f0b446e5.

This adds the 2016 emoji as well as support for using SVG images instead of PNGs.

It also fixes a number of incorrectly categorized emoji and other minor issues.

Upgrade Rake task for Gemojione 3.0.0 and generate sprites.

Upgrade aliases.json by pulling down index.json from the gemojione repository and running the generate_aliases.rb file.

Changelog: https://github.com/jonathanwiesel/gemojione/blob/master/CHANGELOG.md#v301-2016-07-16

For the specific emoji added to the Unicode standard, see: http://emojione.com/releases/2.2.4/

Huge kudos to Jonathan Wiesel (@jonathanwiesel) for his work on the gemojione gem!

Primarily just bug fixes.

Changelog: https://github.com/rails/rails/compare/v4.2.6...v4.2.7