Added trashed collections to pageHistory
history refactoring
Can now use pen to create array dividers
Merge remote-tracking branch 'origin/newfuzzyfactorcard' into history_fixes
Fix for new array division creation.

Ribbon button additions for Instructor.
Fixed array serialization issue
removed convert to xps button for now.
database compliant history items.
fixed stroke history issue.
small array fixes
pageObject add/remove history item fixes
pageObject move/resize history item fixes.
cutting history item fixed.

cutting while in authoring mode fixed.
better green dots.  start on Student Work Panel, will work on more after dinner.
Merge remote-tracking branch 'origin/database' into studentwork
array grid toggle/rotate history fixes
Merge remote-tracking branch 'origin/newfuzzyfactorcard' into history_fixes
array division history fixes
More sensible layout
AcceptStrokes abstraction