Remove not selector increasing specificity of rules

Closes #38958

See merge request gitlab-org/gitlab-ce!14789

Locked issues / mrs docs

Closes #38880

See merge request gitlab-org/gitlab-ce!14770

Fix unable to expand text diff discussion comments

Closes #38940

See merge request gitlab-org/gitlab-ce!14792

Use Gitaly 0.45.1 and gitaly-proto 0.41.0

See merge request gitlab-org/gitlab-ce!14787

Stop using `branch_names.include?` and use `branch_exists?`

See merge request gitlab-org/gitlab-ce!14778

Remove u2f from global namespace

See merge request gitlab-org/gitlab-ce!14776

Flash is now a ES6 module

See merge request gitlab-org/gitlab-ce!14626

Fix a liniting error introduced by !14652

See merge request gitlab-org/gitlab-ce!14790

Resolve "Private Avatars are not CDN compatible"

Closes #38245 and gitlab-com/support-forum#2476

See merge request gitlab-org/gitlab-ce!14443

Fix text for the merge request lock system note

Closes #38941

See merge request gitlab-org/gitlab-ce!14779

Trigger change event of the markdown textarea to allow Vue catch the programmatic changes.

Closes #38441

See merge request gitlab-org/gitlab-ce!14539

Also warn on timestamp in datetime migration cop

See merge request gitlab-org/gitlab-ce!14784

Remove Build code from global namespace

See merge request gitlab-org/gitlab-ce!14744

Migrate Workhorse Send{Diff,Patch} to Gitaly

See merge request gitlab-org/gitlab-ce!14652

Backports EE 38771 changes to CE.

See merge request gitlab-org/gitlab-ce!14782

The types `timestamp` and `datetime` are aliases:
https://github.com/rails/rails/blob/v4.2.10/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb#L362-L364

changed how the container class is added onto the text element
more specs

added back in documentation comment to flash file

Reduced the technical debt around our JS flash function by making it a
module that is imported rather than relying on the global function.
The global function still exists mainly for technical debt with how
some requests are being completed, but new JS should import the module
directly.

Also reduces some tech debt in the file by removing the need for jQuery.
Instead Flash is now 100% vanilla JS.

Remove Api from main.js

See merge request gitlab-org/gitlab-ce!14774

Make naming imports more clear

Closes #38795

See merge request gitlab-org/gitlab-ce!14761