Fix dart2js compile warning
Fix release notes
Merge pull request #3747 from sunglim/warning

Fix deploy compile warning
ace nits and warning cleanup
review comments
Merge pull request #3767 from devoncarew/devoncarew_ace_nits

ace nits and warning cleanup
Merge pull request #3765 from ussuri/consolidate-ui-in-topUi

Consolidate most of UI in spark-polymer-ui element
Fix some minor JS errors/warnings
Merge pull request #3768 from ussuri/cde-polymer-designer

Polymer Designer: fix some minor JS errors/warnings
Merge pull request #3769 from ussuri/consolidate-ui-in-topUi

Fix last-minute typo
Merge pull request #3770 from ussuri/consolidate-ui-in-topUi

Fix runtime error
Ignore vendor libs in GitHub language stats + specify language for custom file extensions
Merge pull request #3774 from ussuri/exclude-vendor-libs-from-github-stats

Ignore vendor libs in GitHub language stats + specify language for custom file extensions
Fix wrong paths + add comments
Merge pull request #3775 from ussuri/exclude-vendor-libs-from-github-stats

Fix wrong paths + add comments in .gitattributes
Fix context menu in file tree view (broke after UI consolidation)
Make context menu in file tree view look consistently with the main one