Import multiple issue assignees from GitLab export

Closes #40275

See merge request gitlab-org/gitlab-ce!17718

Breadcrumb on Admin Runner page

Closes #43717

See merge request gitlab-org/gitlab-ce!17431

When importing from a GitLab archive, an admin can carry over the
assignations. Other users can not.

When a regular user is importing an issue with multiple assignees, the
assignee is replaced with the current user, meaning we would try to
insert current user as an assignee multiple times.

By filtering the array before storing it, the import becomes more
robust.

Update foreman to 0.84.0

Closes #44160

See merge request gitlab-org/gitlab-ce!17690

Docs: Incoming e-mails: require gitlab-ctl restart

See merge request gitlab-org/gitlab-ce!17587

Fix styling of multiple environments in merge request widget

Closes #40610

See merge request gitlab-org/gitlab-ce!17663

Move CreateRepository to OPT_OUT for Gitaly

See merge request gitlab-org/gitlab-ce!17740

Replace project graphs spinach tests with RSpec analog

See merge request gitlab-org/gitlab-ce!17675

Replace project redirects spinach tests with RSpec analog

See merge request gitlab-org/gitlab-ce!17676

Hide emoji popup after multiple spaces or blank lines, closes #40620,#33678

Closes #40620 and #33678

See merge request gitlab-org/gitlab-ce!17680

Improve tests for predefined variables

See merge request gitlab-org/gitlab-ce!17597

On .com repositories are created through Gitaly for a while now. For
customers this is not the case unless these have chosen to do so through
feature flags. By moving this to opt out, everyone will be using this.

This move is part of the migration issue
https://gitlab.com/gitlab-org/gitaly/issues/593

The bigger impact this commit will have is that tests that use a
repository through `FactoryBot.create(:project, :repository)` will now
use Gitaly to do so. As tests run on the same disk, or at least machine,
this will most probably slow them down.

removed pointless test & changed some deployment tests to make more sense
added in v-tooltip

Prior to this change, this method was called add_namespace, which broke
the CRUD convention and made it harder to grep for what I was looking
for. Given the change was a find and replace kind of fix, this was
changed without opening an issue and on another feature branch.

If more dynamic calls are made to add_namespace, these could've been
missed which might lead to incorrect bahaviour. However, going through
the commit log it seems thats not the case.

https://gitlab.com/gitlab-org/gitlab-ce/issues/23036

https://gitlab.com/gitlab-org/gitlab-ce/issues/23036

Revert "Merge branch 'sh-filter-secret-variables' into 'master'"

See merge request gitlab-org/gitlab-ce!17733

This reverts merge request !17159

Upgrade GitLab Pages to v0.7.1

See merge request gitlab-org/gitlab-ce!17732

Fix markdown table showing extra fake column v1

Closes #44024

See merge request gitlab-org/gitlab-ce!17669

fix timescale prometheus charts overlapping

Closes #43458

See merge request gitlab-org/gitlab-ce!17657

Specify installation type for link

See merge request gitlab-org/gitlab-ce!17713

Resolve "lib/gitlab/git/gitlab_projects.rb does not respect Gitlab.config.git.bin_path"

Closes #44161

See merge request gitlab-org/gitlab-ce!17693

Resolve "List Gitaly calls and arguments in the performance bar"

Closes #43805

See merge request gitlab-org/gitlab-ce!17564

Add frontend security documentation

See merge request gitlab-org/gitlab-ce!17622

Make commit pipeline accessible on file page

Closes #44152

See merge request gitlab-org/gitlab-ce!17716

This is as important as SQL timings, and much more important most of the time
than GC, Redis, or Sidekiq.

The same as the SQL queries, show the details of Gitaly calls in the performance
bar, as a modal that can be opened in the same way.

Resolve "Projects::MergeRequestsController#show is slow (implement skeleton loading)"

Closes #35475

See merge request gitlab-org/gitlab-ce!15200

Resolve "Document webpack_bundle_tag replacement method"

Closes #43720 and #42704

See merge request gitlab-org/gitlab-ce!17706

Resolve "Wrong button has the loading state when submitting a comment in issues"

Closes #44149

See merge request gitlab-org/gitlab-ce!17698