Add support for UITabBarController delegate to set the navigation bar title, now that the UINavigationController is the top level VC and each DPMTableViewController is not embedded in a  UINavigationController
[UPDATE] Get MMDrawerController working. Filed issue #97 (https://github.com/mutualmobile/MMDrawerController/issues/97) for a chunky VC transition problem
[FIX] lack of support for UITabController pop animation and visual weirdness (due to these two view controllers not implementing shouldAutorotateToInterfaceOrientation)
[FIX] add support for all 4 orientations (now including upside down)