First pass at a Dining data model.

Contains structures for House Dining information, but nothing yet for Retail venues.
Add links to Dining's sample JSON and properly capitalize McCormick.
Use an NSFRC for the House Dining list.

Still need to do one for the Retail list.
Add intelligence to the Dining model.

House Venues can now say whether or not they are open right now and can also summarize their hours.

To make the sample data useful, this code is hard set to pretend the date is 5/3/2013, around 1pm.
Partial progress on House Dining Menu screen.

Uses the new data model and an NSFRC now.
Added some more convenience methods to the model classes.
Add NSArray and NSSet categories for mapping collections.

No, not that kind of mapping.
Make dietary flags show up on the house menu.

Bake the names and image paths for dietary flags into the dietary flag model class.
Merge branch '3.5/feature/dining' of github.com:MIT-Mobile/MIT-Mobile-for-iPhone into 3.5/feature/dining

Conflicts:
	MIT Mobile.xcodeproj/project.pbxproj
	Modules/Dining/DiningHallMenuViewController.m
Add a sort order to meal items.

That NSOrderedSet doesn't provide sorted results to an NSFetchedResultsController is just silly.