Add a button to bucketView, and a scroll pane for tasks. Made it resizable easily.

Change-Id: Ia25a933290aa922280f0c4a2a396ca2e6497b869
Merge remote-tracking branch 'origin/feature/workflow' into feature/workflow

Conflicts:
	TaskManager/src/main/java/edu/wpi/cs/wpisuitetng/modules/taskmanager/view/workflow/BucketView.java
	TaskManager/src/main/java/edu/wpi/cs/wpisuitetng/modules/taskmanager/view/workflow/WorkflowView.java

Change-Id: Icbdc6887b607287c8aafd3d96fdbf3668720eec9