* ee/master: (262 commits)
  Make dropdown style on project page consistent
  Remove :empty_project factory from spec/requests/api/merge_requests_spec.rb
  Fix merge conflicts
  Try to fix some EE protected branches specs
  Remove EE-specific usages of `:empty_project`
  Change all `:empty_project` to `:project`
  Remove `:empty_project` factory, implement `:repository` trait
  Remove documentation about `:empty_project` since we're removing it
  Use `:empty_project` where possible in features/steps
  Add filtered search to group issue dashboard (EE)
  Update milestone docs EE
  Port of 34027-add-icons-to-sidebar to EE
  Fix docs for using object storage for storing artifacts
  EE port of sidebar-fly-out-sub-nav
  Fix artifacts controller spec for object stores
  Resolve conflicts
  CI fixes for gitaly-ruby
  Fix LogCursor error message handler
  Add structured log messages to Geo LogCursor
  EE-specific changes for `:empty_project` and `:repository`
  ...