* master: (59 commits)
  Improved SVG sanitizer specs to include smoke tests for clean.
  Refactored SVG sanitizer
  Added SVG sanitizer fix to the changelog
  Refactor SVG sanitizer and prevent `xlink:href` to refer to external resources
  Fix SVG whitelisting to allow namespaced attributes
  Fix Error 500 when using closes_issues API with an external issue tracker
  Center layout navigation and remove icons
  Fix preferences_spec test
  Add back sidebar counters and username
  Only create the backup directory if it is local
  Fix safari logo loading animation safari bug
  Revert side nav to full width; remove border under nav; remove tooltips on nav links; stop page content shifting with side nav; put project nav in container
  Update media queries
  Fix profile test
  Fix logo at all screen widths, update sidebar text
  Move tanuki icon to center of nav bar; keep nav closed by default; remove collapsed nav cookie
  Remove unused MergeRequest#gitlab_merge_status method
  Add CHANGELOG item for labels/milestones navigation change
  Render issues link on issues subnav unless you visit merge request controller
  Render only issues/mr in subnav depends on context
  ...