Update t1 from data only if data is not empty
CPU Widget data updates

Update current dataset independently of graph.
Update current window independent of dataset
Create a base buildout with the common parts for all environments.
Merge branch 'issue#356_no_data_widget' of git://github.com/sujeetsr/rockstor-core into sujeetsr-issue#356_no_data_widget
Change journal mode to WAL in db templates
Turn on wal for datastore also.
Widgets data and time interval changes

Maintain current data set independent of rendering logic
Handle empty dataset
Merge branch 'issue#356_no_data_widget' of github.com:sujeetsr/rockstor-core into issue#356_no_data_widget

Conflicts:
	buildout.cfg
Remove console.log
Added new md5sum and removed duplicate section for js-libraries
Simplify model save from the sink since wal decouples reads and writes completely.
Merge branch 'issue#356_no_data_widget' of git://github.com/sujeetsr/rockstor-core into sujeetsr-issue#356_no_data_widget

Conflicts:
	buildout.cfg
Update md5 sum for js-libs in prod buildout