added resetting of original date and time via exif and processed preview metadata sync...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
added exif rotation support to buildcache.py...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
made extracting orientation optional...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>