Use explicit boolean true attribute for show-disabled-button

Closes #38417

See merge request gitlab-org/gitlab-ce!14672

Implement OperationService.UserDeleteBranch Gitaly RPC

See merge request gitlab-org/gitlab-ce!14603

Reduce method calls while evaluating Projects::MergeRequestsController#show.json

See merge request gitlab-org/gitlab-ce!14285

Add byebug to GitLab QA gem list for debugging

See merge request gitlab-org/gitlab-ce!14675

Fix GitLab QA: increase window size to ensure License link shows

See merge request gitlab-org/gitlab-ce!14674

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/38417

Fix bottom spacing for dropdowns that open upwards

Closes #38187 and #38315

See merge request gitlab-org/gitlab-ce!14535

Fix linting errors in sprintf

See merge request gitlab-org/gitlab-ce!14664

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/38315
Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/38187

Hide CI section markers from job trace

See merge request gitlab-org/gitlab-ce!14393

Change index on ci_builds to optimize Jobs Controller

See merge request gitlab-org/gitlab-ce!14519

regression with product labels

See merge request gitlab-org/gitlab-ce!14634

Make the `QA:Page::Project::Show` driver less brittle

See merge request gitlab-org/gitlab-ce!14659

Hide Gollum inside Gitlab::Git::Wiki

See merge request gitlab-org/gitlab-ce!14447

Restore User.from_gitaly

See merge request gitlab-org/gitlab-ce!14662

Bump google-api-client Gem from 0.8.6 to 0.13.6

Closes #38286

See merge request gitlab-org/gitlab-ce!14495

Add basic sprintf implementation to JavaScript

See merge request gitlab-org/gitlab-ce!14506

Added skeleton loading paradigm to UX guide

Closes gitlab-design#35

See merge request gitlab-org/gitlab-ce!14556

Because now addressable would consider them invalid anyway.

Merge remote-tracking branch 'upstream/master' into gem/sm/bump-google-api-client-gem-from-0-8-6-to-0-13-6

* upstream/master: (186 commits)
  Resolve "Precompiled assets with digest strings are ignored in CI"
  Fix navigation dropdown close animation on mobile screens
  Add (partial) index on Labels.template
  Add grpc.log for Gitaly
  Fix gitaly-proto version in Gemfile.lock
  refactor issues_controller_spec `update` action
  Remove edit action for issues
  Add documentation to summarise project archiving
  Fix for Gitaly nil encoding issue
  Fix broken certificate-authority-data with kubectl >= 1.8.0
  Improve performance of filtering notes in NotesController
  Bump gitaly-proto version to v0.39.0
  Fix specs for project creation and update services
  Add CHANGELOG
  Doesn't check if path exists on disk when renaming a hashed project
  [ci skip] Fix archive spec descrptions
  Only copy old/new code when selecting left/right side of parallel diff
  Fix gitlab-rake gitlab:import:repos task
  Send extra Gitaly params for `send_git_archive` if needed
  Update GitLab Pages to v0.6.0
  ...

Resolve "Precompiled assets with digest strings are ignored in CI"

Closes #38598

See merge request gitlab-org/gitlab-ce!14583

Fixed commit avatar being aligned vertically

Closes #38411

See merge request gitlab-org/gitlab-ce!14587

This allows the test to continue even if the GitLab instance being
tested, or the user being used, had SSH access configured.

Fix navigation dropdown close animation on mobile screens

Closes #38502

See merge request gitlab-org/gitlab-ce!14649

Add (partial) index on Labels.template

See merge request gitlab-org/gitlab-ce!14530

Fix gitaly-proto version in Gemfile.lock

See merge request gitlab-org/gitlab-ce!14651