Bump haml gem to 5.0.4

See merge request gitlab-org/gitlab-ce!20847

Resolve "Dangerfile reporting that db/schema.rb wasn't updated"

Closes #49631

See merge request gitlab-org/gitlab-ce!20852

Backport 5158-metrics-alerting to CE

See merge request gitlab-org/gitlab-ce!20148

Fixed IDE not opening JSON files

See merge request gitlab-org/gitlab-ce!20798

Moved repo.css to its own CSS bundle to reduce the size of the main bundle

See merge request gitlab-org/gitlab-ce!20853

Reset local storage between qa tests

Closes gitlab-qa#303

See merge request gitlab-org/gitlab-ce!20844

Resolve "Define /commits/ behaviour"

Closes #31576

See merge request gitlab-org/gitlab-ce!20738

toggle wip status using GraphQL mutation

Closes #48719

See merge request gitlab-org/gitlab-ce!20443

Make the frozen_string Danger check more resilient

See merge request gitlab-org/gitlab-ce!20849

CE backport of issue-boards-js-fix

See merge request gitlab-org/gitlab-ce!20840

Add bar chart component

See merge request gitlab-org/gitlab-ce!20082

Resolve "API endpoint that returns all members, including the inherited membership through ancestor group"

Closes #32783

See merge request gitlab-org/gitlab-ce!19748

Resolve "API endpoint that returns all members, including the inherited membership through ancestor group"

It's possible for a Ruby file to be empty and thus `gets` returns `nil`.

Also indents the Markdown since we're using `<<~` and removes an
unneeded variable.

Resolve "Toggle comments button icon is misaligned"

Closes #49192

See merge request gitlab-org/gitlab-ce!20756

As pointed out in #49625, this version is needed to support Ruby 2.5.

See https://github.com/haml/haml/blob/master/CHANGELOG.md for more details.

Replace issues time tracking progress bar with gitlab-ui's progress bar

Closes gitlab-ui#11

See merge request gitlab-org/gitlab-ce!20416

This is not done by default as it is said to incur a performance hit,
paired with local storage not always being used by the site being
tested.
(https://github.com/teamcapybara/capybara/issues/1702#issuecomment-219483444)

GitLab uses localStorage, for things like remembering which tab you used
last (on the login page for example, between sign-in, ldap, and register)

Fixes: https://gitlab.com/gitlab-org/gitlab-qa/issues/303

Resolve "Broadcast message is misaligned on sign in page"

Closes #49364

See merge request gitlab-org/gitlab-ce!20794

[CE Backport] Geo: Cache projects_count and wikis_count in SiteStatistic

See merge request gitlab-org/gitlab-ce!20413

This is mainly the setup of mutations for GraphQL. Including
authorization and basic return type-structure.

fixes #47716 where email confirmation fails after adding additional emails

Closes #47716

See merge request gitlab-org/gitlab-ce!20084

Add rbtrace to Gemfile

See merge request gitlab-org/gitlab-ce!20831

Enable rubocop for db/**/* and ee/db/**/*

Closes #49582

See merge request gitlab-org/gitlab-ce!20834

Back port ReactiveCaching

See merge request gitlab-org/gitlab-ce!20836

doc: Configuring and initializing Helm Tiller

Closes #49025

See merge request gitlab-org/gitlab-ce!20515

This will be enabled if ENABLE_RBTRACE environment variable is defined.
This will allow us to debug all sorts of issues in production:

https://github.com/tmm1/rbtrace

Prefer using direct links in docs styleguide

See merge request gitlab-org/gitlab-ce!20832

Adds rack attack disabled by default notice to documentation

See merge request gitlab-org/gitlab-ce!20833

Disable Rack Attack by default

Closes #40973

See merge request gitlab-org/gitlab-ce!16669