Break out query parsing from setting the query in the model so FindInFilesUI doesn't need to touch the model before the search starts (for #6966)
Show cause of error when opening drag-&-dropped files fails.
Plumb the error code back from the FILE_OPEN command, and display errors
in the existing bullet list error dialog used by DragAndDrop.
eat tab and context menu keys
let context menu keys trickle up
Sprint -> Release
Uppercase Release
merge with master
add link to troubleshooting page to live preview error messages
restore string
Quick Docs: Ignore vendor prefixes if needed
fix typo
Add unit test to verify that FILE_OPEN command now returns error code when
it fails.

Also, cleanup: group image-related tests into a single describe() instead
of a separate one per it().
Merge remote-tracking branch 'origin/master' into pflynn/dragdrop-errors

And clean up blank-line spacing in DocumentCommandHandlers-test
change for code review
Navigate through Extension Manager tabs via Ctrl-(Shift)-Tab
Using box-shadow to stop links for shifting a few pixels when tabbed.
Fix minor TimingFunction validation issue
Remove unused vars
Add references to utils/Global back
Fix Travis failure