Trying to reduce the size of PhysicalAction.

'is_binary' is unused (for now), belongs in one location.
The itemtype should be in one spot as well.
Rearrage stuff to undo multiple inserts.

Going to slice off more columns, and multiple inserts hurt.
Labels are now broken out into their own table.

Labels are no longer allowed to be NULL.
Remove bulk inserts.
Consolidated actiontype lookup cases.
Fix for case-insensitive renames.
Add repo_re, exclude, minor fix for open.