Merge branch 'fix-polymer-ui-menu' of https://github.com/ussuri/spark into sergey_menus
Added notion of modal dialogs
Merge branch 'master' of https://github.com/dart-lang/spark into sergey_menus
Cleanup
cleanup
Temporary testing setup
initial work on a workspace builder
Merge branch 'master' into devoncarew_builder
Temporary spinner addition
Temporary progress test
merge to master and run the build in a job
fix completer
Added font-awesome css to the app folder, changed the reference to it in spark.html, added spinner to the menu bar.
Added all of font-awesome download to app directory (in "font-awesome") and linked to the min.css.  Removed the old font-awesome.css
Created ActivitySpinner class as a singleton and added setShowing(bool) method on it to set activity spinner showing or not.
Changed testing for stages (one click per stage)
Reorganized.  setup handlers.  setup spinner handling
Merging timer code back in.
changed to run each builder in it's own job; added two more tests
Increased spark-overlay starting z-index

That fixes the menu shown beneath the tabs