Port of sh-headless-chrome-support to EE

See merge request gitlab-org/gitlab-ee!3245

Fix clusters description text collapsing away on page-load -- EE merge edition

Closes gitlab-ce#39771

See merge request gitlab-org/gitlab-ee!3264

Resolve "Add group actions to Audit events"

Closes #1372

See merge request gitlab-org/gitlab-ee!3176

Project mirror data scheduling specs no longer rely on be_within to have the correct interval.

Closes #3919

See merge request gitlab-org/gitlab-ee!3263

[ci skip]

[ci skip]

Add reconfigure logs location to docs

See merge request gitlab-org/gitlab-ee!3269

Remove bottom-border from last responsive table row -- EE merge edition

Closes gitlab-ce#39776

See merge request gitlab-org/gitlab-ee!3265

Fix text/plain emails for approval/unapproval

Closes #3924

See merge request gitlab-org/gitlab-ee!3266

Add ability to enforce that only the author of a commit can push those changes back to the repository

Closes #2445

See merge request gitlab-org/gitlab-ee!3086

* sh-headless-chrome-support: (167 commits)
  use resize_window helper
  refactor wait_for_requests, add slow_requests block helper
  target label instead of obscured input element
  scroll to top before attempting to click the "Side-by-side" button
  remove out-of-date comments about webdriver compatability
  explicitly add Accept: */* HTTP header back to test
  add visible argument to helper rather than duplicating code
  add InspectRequests helper automatically to :js tests
  add CookieHelper and InputHelper automatically to :js tests
  fix bracket styling
  remove unused capybara_select2 helper
  add spacing around yield
  add slow_requests! to filtered search tests which expect to see a loading spinner
  make window resizing more resiliant on small screens when headless mode is off
  fix flaky fill_in use in which return key would occasionally be intercepted by autocomplete
  move resize option the pre-test hooks instead of post-test
  enable CHROME_HEADLESS environment variable for Spinach tests similar to RSpec
  reset browser window size between tests
  explicitly check innerText since selenium webdriver only looks at visible text
  prevent resolve buttons from being clicked twice triggering a race condition
  ...

Add system hooks user_rename and group_rename

Closes gitlab-ce#39596

See merge request gitlab-org/gitlab-ee!3257

Prune Geo event log

Closes #3577

See merge request gitlab-org/gitlab-ee!3172

Geo repository sync over HTTPS

Closes #3341

See merge request gitlab-org/gitlab-ee!3116

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/39776

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/39771

Caused by https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/13363