Reinstaured vcs toolbar
Connect correctly to fixed animation backend

Note that this branch includes the uvcdat_cdattoolbar branch.

*** This branch should be updated in unison with the corresponding
uvcdat-490-animation-updates in the uvcdat-devel repo. ***
Fix play/stop button logic
Merge remote-tracking branch 'origin/uvcdat-490-animation-updates-rebase' into uvcdat-master
Merge remote-tracking branch 'origin/uvcdat-520-fix-loaded-pkgs' into uvcdat-master
Merge remote-tracking branch 'origin/uvcdat-dv3d-provenance' into uvcdat-master

Conflicts:
	vistrails/gui/application.py
	vistrails/packages/uvcdat_cdms/init.py
Move PyQt signal creation to GUI

This must be merged at the same time as the
bugfix-579-fix-animate-signals on the uvcdat repo!
Merge remote-tracking branch 'origin/uvcdat-520-suppress-gui-errors' into uvcdat-master
Tom found the issue createInteractor needed 'True' arg instead of 'False'
Merge remote-tracking branch 'origin/uvcdat-589-vcs-plot-out-spreadsheet' into uvcdat-master
Merge branch 'uvcdat-579-fix-animate-signals' into uvcdat-master
fixed issue where editing plot properties would draw new one on top w/o clearing
Merge remote-tracking branch 'origin/uvcdat-509-legend-overdrawn' into uvcdat-master