initializes the branches dropdown upon invalid entry

Closes #40012

See merge request gitlab-org/gitlab-ce!15588

Fix star icon color/stroke

Closes #40638

See merge request gitlab-org/gitlab-ce!15636

I am certainly weary of debugging sidekiq but I don't think that's what was meant

See merge request gitlab-org/gitlab-ce!15635

Merge branch '38962-automatically-run-a-pipeline-when-auto-devops-is-turned-on-in-project-settings' into 'master'

Add checkbox to automatically run a pipeline when Auto DevOps is turned on in project settings

Closes #38962

See merge request gitlab-org/gitlab-ce!15380

Fix Issue comment submit button disabled on GFM paste

Closes #40373

See merge request gitlab-org/gitlab-ce!15530

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/38962

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/38962

Resolve "Issue note icons wrong color"

Closes #40459

See merge request gitlab-org/gitlab-ce!15561

Merge branch '40530-merge-request-generates-wrong-diff-when-branch-and-tag-have-the-same-name' into 'master'

Resolve "Merge request generates wrong diff when branch and tag have the same name"

Closes #40530

See merge request gitlab-org/gitlab-ce!15591

If a merge request was created with a branch name that also matched a tag name,
we'd generate a comparison to or from the tag respectively, rather than the
branch. Merging would still use the branch, of course.

To avoid this, ensure that when we get the branch heads, we prepend the
reference prefix for branches, which will ensure that we generate the correct
comparison.

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/40373

When copying some text from another note and paste,
it goes through `copy_as_gfm` `paste` handler
that calls `e.preventDefault()` which stops things.
But then when inserting the text, we manually trigger
an `input` event with jQuery which doesn't seem to be
picked up by Vue `v-model`.

Using copy/paste trick from https://stackoverflow.com/a/41046276/796832

Lock seed-fu at the correct version in Gemfile.lock

See merge request gitlab-org/gitlab-ce!15631

[ci skip]

Add controller#action metrics on Gitaly

See merge request gitlab-org/gitlab-ce!15244

At this time we had good metrics on what number or requests each GRPC
received, but were in the dark what controller#action combination was
responsable. Or if Sidekiq was responsable. Now added are call counts
per service and rpc matched with controller#action combinations.

Fix defaults for MR states and merge statuses

Closes #40534

See merge request gitlab-org/gitlab-ce!15594

Hashed storage attachments migration path

See merge request gitlab-org/gitlab-ce!15352

Strip leading & trailing whitespaces in CI/CD secret variable keys

See merge request gitlab-org/gitlab-ce!15615

Upgrade codeclimate image to latest

Closes #40255

See merge request gitlab-org/gitlab-ce!15461

Add new API endpoint - list jobs of a specified runner

Closes #39699

See merge request gitlab-org/gitlab-ce!15432

limit icon component size to valid values

See merge request gitlab-org/gitlab-ce!15618

Upgrade seed-fu to 2.3.7

Closes #40568

See merge request gitlab-org/gitlab-ce!15607

Add new API endpoint - get a namespace by ID

Closes #40254

See merge request gitlab-org/gitlab-ce!15442

Refactor the way we pass `old associations` to issuable's update services

Closes #40226

See merge request gitlab-org/gitlab-ce!15542

This commit also makes spec/policies/namespace_policy_spec.rb file
to be compatible with the same file in GitLab EE.

Backport disable autocomplete

See merge request gitlab-org/gitlab-ce!15557