Use UICollectionView rather than AQGridView
Update to iOS6 minimum version (as lower versions don't have UICollectionView).
Suggest https://github.com/steipete/PSTCollectionView/tree/master/PSTCollectionView if support for older versions is required.
Fix warnings 'created' by making iOS6 minimum version.
Padding is different using UICollectionView to AQGridView.
Added default splash images.
Altered icons.
Replaced shelf images.
Changed Project settings to basic Briefing defaults.
Changed shelf UI colors and proportions
Modified issue view proportions.
Merge from master; upstream update
Changed Subscription strings.
Build 22/5
Fix update issue (where UICollectionView is not initialised when handleRefresh is finished)
Merge remote-tracking branch 'origin/master' into uicollectionview

Conflicts:
	BakerShelf/ShelfViewController.h
	BakerShelf/ShelfViewController.m
	BakerView/BakerViewController.m
Better error message for book.json type errors
More error handling when parsing book.json

When the JSON contains a duplicate key, JSONObjectWithData on iOS 5.1 will return nil. Unfortunately, the returned error is not very helpful, but it's at least better than the previous version of the code (which was printing the error in the wrong place).
See #904.
Updated Version number and Build number to reflect the actual version of Baker
Change the gridView frame on rotation to mimic the display behaviour of AQGridView.
Merge pull request #918 from benoitchantre/master

iOS Application Target: version and build updated for 4.1