Initial thoughts on the fix.
Merge branch 'feature-csf-ModelDocumentation'
David's help with the history issue
Final clean-up
Merge branch 'feature-je-history'
Merge branch 'origin/develop'

Conflicts:
	Rock/Web/UI/RockPage.cs
RockPage Changes
Final update
Checkin Config UI is almost fully functional.  Just have a couple of small things left 1) Drag/Drop ordering 2) Graceful validation for invalid values in inputs 3) Graceful validation when deleting something that can't be deleted (for example, a group that has GroupMembers)
Model Documentation updates
Merge branch 'develop'
Model Documentation updates