Resolve "Integrate new vue+vuex code base with new API and remove old haml code"

Closes #50904

See merge request gitlab-org/gitlab-ce!22116

Resolve "In web editor, when delete a file, should navigate to enclosing directory"

Closes #37727

See merge request gitlab-org/gitlab-ce!21465

3. enable jasmine/new-line-before-expect

See merge request gitlab-org/gitlab-ce!22234

Prettify all the things (part 8)

See merge request gitlab-org/gitlab-ce!22258

Prettify all the things (part 1)

See merge request gitlab-org/gitlab-ce!22248

Resolve "Share frontend configs between repos"

Closes #49740

See merge request gitlab-org/gitlab-ce!22405

2. enable jasmine/no-promise-without-done-fail

See merge request gitlab-org/gitlab-ce!22231

Fix "ready for review" link

See merge request gitlab-org/gitlab-ce!22393

Fix commit signature error when project is disabled

Closes #50903

See merge request gitlab-org/gitlab-ce!22344

Resolve "Webhook Image URLs Rewritten Incorrectly in Issues"

Closes #52650

See merge request gitlab-org/gitlab-ce!22361

Prettify all the things (part 6)

See merge request gitlab-org/gitlab-ce!22256

Fixes styling issues in test reports

Closes #51386 and #52147

See merge request gitlab-org/gitlab-ce!22204

Resolve "Project slug does not auto populate in IE11"

Closes #52686

See merge request gitlab-org/gitlab-ce!22367

Verify that usage ping works when all counts time out

See merge request gitlab-org/gitlab-ce!22358

[QA] Handle sign-up when terms must be accepted

See merge request gitlab-org/gitlab-ce!22374

Add IID headers to E-Mail notifications

Closes #52477

See merge request gitlab-org/gitlab-ce!22263

Fixed file templates not clearing in Web IDE

Closes #52487

See merge request gitlab-org/gitlab-ce!22357

Document linguist overriding

See merge request gitlab-org/gitlab-ce!22386

Fixes diff stats not being visible with performance bar

See merge request gitlab-org/gitlab-ce!22390

Disable artifact validation for download action

See merge request gitlab-org/gitlab-ce!22300

Use grpc v1.15.x

See merge request gitlab-org/gitlab-ce!22350

These headers can be used to build URLs for API requests. Good examples
would be Issues and Merge Requests

Update git and install git-lfs QA docker image

See merge request gitlab-org/gitlab-ce!22355

Remove assignee_id=0 condition from search filters, we agreed
that just presence of "ready of review" label is sufficient
for filtering MRs, no need to unassign yourself.

Project::ClustersController spec improvement

See merge request gitlab-org/gitlab-ce!22346

Users report that some languages aren't detected, or at least not
reported. This is mostly due to the fact that these languages aren't
programming languages, according to Linguist.

Originally noted in: https://gitlab.com/gitlab-org/gitlab-ce/issues/50705#note_99600216

Related: https://gitlab.com/gitlab-org/gitlab-ce/issues/51995