[QA] Extend create_merge_request_spec to set assignee to MR

See merge request gitlab-org/gitlab-ce!23488

Upgrade to workhorse 7.6.0:

See merge request gitlab-org/gitlab-ce!23694

Avoid caching BroadcastMessage as an ActiveRecord object

Closes #55034

See merge request gitlab-org/gitlab-ce!23662

Bump sentry-raven gem to 2.7.4

See merge request gitlab-org/gitlab-ce!23699

Fix profile_header bottom margin, #51807.

Closes #51807

See merge request gitlab-org/gitlab-ce!23168

Resolve "Main navbar is broken in certain viewport widths"

Closes #49713

See merge request gitlab-org/gitlab-ce!23348

Don't allow Danger to fail in CI any more

Closes gitlab-org/release/framework#21

See merge request gitlab-org/gitlab-ce!23695

Fix a frozen string error in lib/gitlab/utils.rb

Closes #55116

See merge request gitlab-org/gitlab-ce!23690

Contains only minor fixes from 2.7.2:
https://github.com/getsentry/raven-ruby/releases

Remove unnecessary includes of ShellAdapter

See merge request gitlab-org/gitlab-ce!23607

Set a fixed date for frontend fixtures

See merge request gitlab-org/gitlab-ce!22672

Makes the following changes in order to have all the
items of the top nav fit within all of the new Bootstrap 4 breakpoints:

- Change GitLab logo to show only on desktop breakpoint (lg and up)
  - Move margin from logo to logo text, saving 8px
- Move the following icon links to the "More" nav dropdown
  - Instance Statistics (ConDev Index)
  - Admin area (if Admin)
  - Sherlock Transactions (if enabled)
- Removed separator between Admin icons
- Change search input width from 240px to 200px
- Move "Activity", "Milestone", and "Snippets" into "More" menu on lg breakpoints
- Show "More" menu of lg breakpoints

Backport some EE helper changes

See merge request gitlab-org/gitlab-ce!23631

In https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/20654 this job
was marked as allowing failures, but this allows developers to ignore
the results that Danger produces. Since it's not clear why the job was
allowed to fail, and since it's somewhat counter productive, we no
longer allow it to fail.

Improve feature proposal template for improved product thinking

See merge request gitlab-org/gitlab-ce!23190

Signed-off-by: Rémy Coutable <remy@rymai.me>

Fix a frozen string error in app/mailers/notify.rb

Closes #55104

See merge request gitlab-org/gitlab-ce!23683

Adjust dropdown item and header padding to comply with design specs

See merge request gitlab-org/gitlab-ce!23552

Resolve "Project Namespace field should be removed from Group Cluster, Add existing"

Closes #55090

See merge request gitlab-org/gitlab-ce!23679

Add QA option to use the same Chrome profile

Closes #52255

See merge request gitlab-org/gitlab-ce!23576

Signed-off-by: Rémy Coutable <remy@rymai.me>

Replaces vue-resource with axios for registry code

See merge request gitlab-org/gitlab-ce!23545

Only allow strings in URL::Sanitizer.valid?

Closes #55079

See merge request gitlab-org/gitlab-ce!23675

Fix already initialized constant IDENTIFIER warning

See merge request gitlab-org/gitlab-ce!23681

Check for valid refs in CommitController before doing anything

Closes gitaly#1425

See merge request gitlab-org/gitlab-ce!23680

Revert "Merge branch 'bvl-reenable-codeowners' into 'master'"

See merge request gitlab-org/gitlab-ce!23684

Add endpoint to download single artifact by ref

Closes #54626

See merge request gitlab-org/gitlab-ce!23538

This reverts merge request !23381

Populate MR metrics with events table information (migration)

Closes #41587

See merge request gitlab-org/gitlab-ce!23564

Use new reports syntax for SAST in Auto DevOps

See merge request gitlab-org/gitlab-ce!23163

This commit closes #51807 issue.

Fixed styling of image comment badges on commits

Closes #54849

See merge request gitlab-org/gitlab-ce!23659