Initial commit of the grid layout for the iPad News
Add a helper class for positioning items in a row.
Add a helper class for managing the grid layout for each section
Add missing project file entries
Tweaks to the layout handling and addition of decorative views
Clean up some inconsistencies in the section helper header
Clean up and remove unused code
Reorganize and cleanup the grid layout
Split out the delegate into delegate and data source protocols

Also add delegate pass-thru methods so things switch over cleanly when the internal data management is removed.
Add a constant for the divider decoration view
Rework the row layout helper to be a bit smarter about laying things out

Reduces the complexity adding items and, instead, waits until things must be laid out to lay them out.

The build is broken in this commit.
More tweaks to the layout process to simply things a bit more.

The build is broken in this commit.
Adds a decoration view class
Adds a method for getting the proper identifier for a cell.

Also includes some debugging code if basic UICollectionViewCells are used
Remove the code for configuring the UICollectionView.

The MITNewsCollectionViewController will handle the setup it needs.
Be more explicit when checking for the debugging cell types
Fix issues with cells not being laid out properly in the row

The padding needs to be accounted for *before* calculating how wide our columns will be
Switch to using bounds/frame and fix the row layout height offsets
Return an empty, colored view for now
Fix the height sizing for the featured item cell