* master: (124 commits)
Double-check next value for internal ids.
Resolve "skeleton placeholder on diff has white background"
Replace the `project/commits/comments.feature` spinach test with an rspec analog
Set ENV['IN_MEMORY_APPLICATION_SETTINGS'] to 'true in spec/db/production/settings_spec.rb
Update docs on `.gitlab-ci.yml` and variables policy
Add note about support of variables policy to docs
Revert and fix
corrected git cheat sheet url
Bump parser gem to 2.5.1.0 to remove warning in rspec
Update invalid test application_settings_controller_spec.rb
Use stable docker image instead of latest
Handle cancelled request
Stop polling and fetch the table
[ci skip] Updates table when stage is clicked
Backport GitLab domain helper methods
use jquery object in togglePopover
Fix other listeners
Fix the metrics link being not rendering the html
Fix feature_highlight listener
Update custom issue tracker docs
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