Create fork networks for deleted source projects

Closes #40072

See merge request gitlab-org/gitlab-ce!15595

Minor backport from EE

See merge request gitlab-org/gitlab-ce!15647

Rescheduling will make sure the fork networks with a deleted source
project are created.

That way we can join forks-of-forks into the same network even if
their original source was deleted.

Consider the following:

  `awesome-oss/badger` is forked to `coolstuff/badger`, which is
  forked to `user-a/badger` which in turn is forked to
  `user-b/badger`.

  When `awesome-oss/badger` is deleted, we will now create a fork
  network with `coolstuff/badger` as the root. The `user-a/badger`
  and `user-b/badger` projects will be added to the network.

Added IDE commit panel

Closes #40041

See merge request gitlab-org/gitlab-ce!15583

Fix item name and namespace text overflow in Projects dropdown

Closes #39827

See merge request gitlab-org/gitlab-ce!15451

Reuse authors when rendering event Atom feeds

See merge request gitlab-org/gitlab-ce!15630

Resolve "Customize branch name when using create branch in an issue"

Closes #21143

See merge request gitlab-org/gitlab-ce!13884

Improve autosize spec

See merge request gitlab-org/gitlab-ce!15620

SSHUploadPack over Gitaly is now OptOut

Closes gitaly#730

See merge request gitlab-org/gitlab-ce!15623

Backport - Add border for epic edit button

See merge request gitlab-org/gitlab-ce!15637

Backport epic tasklist

See merge request gitlab-org/gitlab-ce!15556

Add timeouts for Gitaly calls

Closes gitaly#656

See merge request gitlab-org/gitlab-ce!15047

Use fuzzy search with minimum length of 3 characters where appropriate

Closes #40512

See merge request gitlab-org/gitlab-ce!15592

Remove empty new-nav.scss

See merge request gitlab-org/gitlab-ce!15619

- Better gitaly-handling in /api/internal/allowed specs

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]

Previously we'd use "event.author_email" which translates to
"event.author.email". This would result in an extra query being executed
_for every event_ just to get the same author's Email address.

Instead of doing all this useless work we can just pass the User object
returned by "event.author" since:

1. This allows us to re-use the user object's Email address.
2. Authors are eager-loaded, so this doesn't cause any N+1 queries.

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