Add return/go back/cancel button when in the workflow development view

[adswafford]

Users are tempted to click the back button when they can't find a way to cancel out of the workflow creation and this results in confusion since they return to the view analyses page instead of the analysis they're in.

I tagged it for the analysis plugin, but the same is true for the processing workflow creation.

[antgonza]

The back processing takes you back to the study list vs. the study you were processing.