* 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
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