Fix GitHub importer for PRs of deleted forked repositories

Closes #29541

See merge request !9992

Fix race condition where a namespace would be deleted before a project was deleted

Closes #30334 and #30306

See merge request !10389

Fix a few N+1 queries identified by Bullet

See merge request !10361

Fix warning when trying to clone repo that already existed

See merge request !10367

Fix a transient failure caused by FFaker

Closes #30211

See merge request !10404

Relax constraint on Wiki IDs, since subdirectories can contain spaces

Closes #30357

See merge request !10396

Add a wait_for_ajax call to ensure Todos page cleans up properly

See merge request !10398

Fixes method not replacing URL parameters correctly

Closes #30264

See merge request !10351

Fix redirection after login when the referer have params

Closes #29669

See merge request !10397

Remove unnecessary ORDER BY clause when updating todos

See merge request !10399

The error occurs when the Ffaker-generate title or description of
issue3 contains git, e.g. fugit in this case.
Signed-off-by: Rémy Coutable <remy@rymai.me>

Use gitaly commit is ancestor

See merge request !9864

Fix N+1 query in loading pipelines in merge requests

See merge request !10363

Potentially fixes intermittent failures such as https://gitlab.com/gitlab-org/gitlab-ce/builds/13484375

If a subdirectory contains spaces, GitLab would be unable to generate
the route in the sidebar, resulting in an Error 500.

Closes #30357

See !10263

From Bullet failures in !10263

When deleting a user, the following sequence could happen:

1. Project `mygroup/myproject` is scheduled for deletion
2. The group `mygroup` is deleted
3. Sidekiq worker runs to delete `mygroup/myproject`, but the namespace and routes have
   been destroyed.

Closes #30334

fixes the warning:

fatal: destination path '~/gitlab-ce/gitlab/tmp/tests/gitlab-test-fork_bare' already exists and is not an empty directory.

Fix Spinach and Capybara dependencies

Closes #30347

See merge request !10395

Closes #30347

20914 Limits line length for project home page

Closes #20914

See merge request !10346

Increase Capybara's timeout

Closes #30236

See merge request !10337

Prevent users from disconnecting gitlab account from CAS

Closes #25556

See merge request !10282