Updates to RUSlideMenuNavigationController.
RUSlideMenuNavigationController: Cleanup, refactoring/simplifying code.
 - Removed RUStatusBarBackgroundNavigationController and category.
 - RUSlideMenuNavigationController: added 'fitMenuViewsUnderStatusBar' property.
 - Added NTStoresSideMenuView.
 - RUAttributesDictionaryBuilder now absorbs text alignment from label.
UIApplication+RUPushNotifications: Updated category names.
 - Added NSString+RUNumberCheck.
 - Added UITextField+RUOnlyTextInput.
Merge branch 'development' of https://github.com/nifti/ResplendentUtilities into development
Added UITextField+RUSelectedTextRange.
Updated NSDate+RUTimeAgo, now can be formatted using protocol NSDate_RUTimeAgoFormatter.
Merge branch 'development' of https://github.com/Resplendent/ResplendentUtilities into development
 - Renamed UIImage+Resizing to UIImage+RUResizing, and lots of updates for proper image modes.
 - Renamed UIImage+Resizing to UIImage+RUResizing, minor updating.
UIImage+RURotation: Fixed method name.