Removed obsolete openURLForSocialProfile
Added tap handlers for URL, address and socialProfile properties
Added comments
Added method abPropertyIDforSection:
Refactored numberOfElementsInSection:
Refactored tableView:cellForRowAtIndexPath:
Refactored tableView:editingStyleForRowAtIndexPath:
Implemented tableView:commitEditingStyle:forRowAtIndexPath:
Fixed typo
Added support for ABMultiValueRemoveValueAndLabelAtIndex