* 8-5-stable:
  Version 8.5.2
  Merge branch 'docs_todos' into 'master'
  Merge branch 'fix/13785-dashboard-projects-display-welcome-after-search' into 'master'
  Merge branch 'fix/13781-delete-tag-without-ajax' into 'master'
  Merge branch 'fix/deprecated-ci-badge-permissions' into 'master'
  Merge branch 'issue_13623' into 'master'
  Merge branch 'fix/12652-omniauth-import-from-gitlab-com-fails' into 'master'
  Merge branch 'shortcuts-help' into 'master'
  Merge branch 'rel-url-fix' into 'master'
  Merge branch 'sidebar-overlap-fix' into 'master'
  Merge branch 'rs-improve-grace-period' into 'master'
  Merge branch 'issue_13648' into 'master'
  Merge branch 'issue_13621' into 'master'
  Merge branch 'issue_13851' into 'master'
  Merge branch 'fix-migration' into 'master'
  Merge branch '11489-branded-appearance-to-ce' into 'master'
  Update Rails to 4.2.5.2