Removes previous workflow presenters and adds presenters for the BucketView and WorkflowView. Moves the construction of the 4 static buckets to the WorkflowViewPresenter (+1 squashed commits)

Squashed commits:

[67f93b7] Initial code for the bucket and workflow presenters.
This should not pass review.
Change-Id: Ief83b231da8f19dfeb0f6fab979fd4305945a953