* master: (723 commits)
  Bump Rack Attack to v4.3.1 for security fix
  Remove duplicate entry in the changelog
  Remove extra spaces after branchname
  Fix merge-request-reopen button title
  Add branch and tag operation to tree dropdown
  Use gitlab-shell 2.6.9
  Clarify Windows shell executor artifact upload support
  Fix feature specs: we always show the build status if ci_commit is present
  Do not display project group/name when issue and MR are in same project
  Don't create CI status for refs that doesn't have .gitlab-ci.yml, even if the builds are enabled
  Use gitlab-workhorse 0.5.1
  Fix ci_projects migration by using the value only from latest row [ci skip]
  Revert sidebar position for issue and merge request
  Add info on using private Docker registries in CI [ci skip]
  Upgrade Poltergeist to 1.8.1. #4131
  Fix ux issue with "This issue will be closed automatically" message
  Move MR Builds tab next to Commits
  Api support for requesting starred projects for user
  Fix Rubocop complain.
  Fix merge widget JS for buttons
  ...

Conflicts:
	app/models/project.rb