Split Feature Functionality Improvements

I have hit a some pretty hard feedback/confusion when watching users try out the split tool at a customer's site.

• Confusion between "Selection Split" and "Direct Split" workflows below:
  • Selection Split Workflow:
    1. The selection can be established with the selection tool and.or table view
    2. The split tool is then used to establish the division (by drawing a line)
    3. The split operation is then performed resulting in two or more features
  • Direct Split Workflow:
    1. The area under the line is used to establish a selection (I think this is done with a bbox on the geometry used for splitting)
    2. The line is then used to establish a division
    3. The split operation is then performed resulting in two or more features
• Unable to choose what to do when there are overlapping polygons
• Unable to split a multi geometry ( in order to grab just a couple of the polygons)

I have some ideas on how to fix this which I will explore in sub tasks; it is important to very clearly report this issue and ideas as Marco is in the middle of porting these tools.