Add vertical dragging support for NIOverlay.
Merge pull request #475 from jverkoey/debug_view

Add vertical dragging support for NIOverlay.
Implement -[NITitleCellObject init] and make it call initWithTitle:image:
so that calls to init in descendant classes don't skip designated initializers
along the inheritance hierarchy.
Merge pull request #477 from jverkoey/NITitleCellObjectInit

Implement -[NITitleCellObject init]
Set edgesForExtendedLayout for iOS7
Merge pull request #480 from dlackty/fix-iOS7-web-controller

Fix NIWebController view frame under iOS7
Specify C external linkage for NISnapshotRotation
Merge pull request #481 from jverkoey/cpp

Specify C external linkage for NISnapshotRotation functions
Make NISegmentedControlFormElementCell layout take content padding into account.
Merge pull request #482 from jverkoey/segmented_control_layout

Fix NISegmentedControlFormElementCell layout