Update project to recommended settings for Xcode 5
Force-load categories with a base class

Assigning a base class to the force loading macro to silence warnings
generated by Xcode.
Fix test failure on iOS 7

Apple introduced a private `UITableViewCellScrollView` class that is
actually the superview of all `UITableViewCell`s. We should expect that
to be returned by the parent selector.
Update pod version