Every time a user logs in or out, the Trackable attributes are written to the
database. This is causing a lot of load on the database, for data that isn't
really critical.

So to avoid the database being hammered, add a Gitlab::ExclusiveLease before
writing trackable attributes to the database. This lease expires after an hour,
so only when the attributes were written more than an hour ago, they can be
written again. Otherwise they are ignored.

Add support for commit diff ignore_whitespace_change and paths flags

Closes gitaly#198

See merge request !11028

Revert "Merge branch 'fix-rspec_profiling-establish_connection-string-deprecation' into 'master'"

See merge request !11153

Add Pipeline Schedules that supersedes experimental Trigger Schedule

Closes #30882

See merge request !10853

This reverts merge request !11150

Another attempt at access_control_ce_spec

Closes #31827

See merge request !11123

Cast ENV['RSPEC_PROFILING_POSTGRES_URL'] to symbol in establish_connection call …

See merge request !11150

Closes gitaly#198

Correctly stub application settings in signup_spec.rb

See merge request !11151

Rewrite Pipeline Graph in Vue.js to allow realtime

Closes #25226 and #31557

See merge request !10878

Cast ENV['RSPEC_PROFILING_POSTGRES_URL'] to symbol in establish_connection call of rspec_profiling.rb

* master: (40 commits)
  Use GitLab Pages v0.4.2
  Do not reprocess actions when user retries pipeline
  Add specs for extended status for manual actions
  Refine inheritance model of extended CI/CD statuses
  Introduce generic manual action extended status class
  Check ability to update build on the API resource
  Require build to be present in the controller
  Authorize build update on per object basis
  Use update build policy instead of new play policy
  Improve environment policy class
  Rephrase documentation for protected actions feature
  Improve code style related to protected actions
  Add changelog entry for external env URL btn fix
  Hide environment external URL button if not defined
  Fix builds controller spec related to protected actions
  Fix environment policy class name in specs
  Add Changelog entry for protected manual actions
  Document protected manual actions feature
  Improve specs for jobs API regarding manual actions
  Fix Rubocop offense in environments policy class
  ...

Check access to a branch when user triggers manual action

Closes #20261

See merge request !10494

Hide environment external URL button if not defined

Closes #30832

See merge request !11029

Use GitLab Pages v0.4.2

See merge request !11131

Single commit squash of all changes for https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/10878

It's needed due to https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/10777 being merged with squash.

Real time pipeline show action

Closes #25226

See merge request !10777

Fix `Routable.find_by_full_path` on MySQL

See merge request !11146

Add tooltips to user contribution graph key

Closes #23751

See merge request !11138

Resolve "Redirect to new project link after a rename"

Closes #17361 and #30317

See merge request !11136

Use an absolute path for locale path in FastGettext config

See merge request !11141

Trigger click instead of actual click to make sure the right button is always hit

Closes #30504

See merge request !11127

Fix fork_spec failure to do with mySQL

Closes #31870

See merge request !11121

Unicorn was unable to start due to this bad config on Omnibus.

Colorize labels in issue search field

Closes #30467

See merge request !11047

Merge branch '29925-gitlab-shell-hooks-can-no-longer-send-absolute-paths-to-gitlab-ce' into 'master'

Generate and handle a gl_repository param to pass around components

Closes #29925

See merge request !10992

Include droplab-item-ignore in droplab docs

See merge request !10808