#MODIFY DZNPhotoPickerController

# *searchBarframe: always default to same height at 0,0 position
# *searchBarSearchButtonClicked: see modify comment
# *searchBarCancelButtonClicked: navigate directly back to previous
controller
# *searchDisplayControllerDidBeginSearch set showCancelButton true
# *add bottomView and its button functionality in
DZNPhotoDisplayViewController
#   add DZNPhotoDisplayViewControllerDelegate
#   see modify block
# *add #import <UIView+MGBadgeView.h>
# contentSize add detect navigation bar hidden feature