GitLab

* master: (293 commits)
  Revert changelog entry for removed feature
  Revert "Allow CI/CD Jobs being grouped on version strings"
  Resolve "Protected branches count is wrong when a wildcard includes several protected branches"
  Use standard codequality job
  Resolve "Allow the configuration of a project's merge method via the API"
  [Rails5] Rename `sort` methods to `sort_by_attribute`
  Add better LDAP connection handling
  Updated components to PascalCase
  Handle invalid params when trying update_username
  Move network related app settings to expandable blocks
  [Rails5] Update Gemfile.rails5.lock [ci skip]
  Update Security Products examples documentation
  Backport Gitlab::Git::Checksum to CE
  Add changelog
  Refactor discussions/notes code
  Remove unnecessary section looking in admin settings qa
  Explicitly use page context for qa/factory/settings/hashed_storage.rb
  Use gitlab_environment because we need:
  Allow feature gate removal through the API
  Use shard name in Git::GitlabProjects instead of shard path
  ...