hdr pic added to gallery
better performance
fixed oom bug, threaded image loading for faster activity load,
crop 16/9 added on 3d hdr
pictures for hdr now saved in new thread for faster picture taking, changed alpha for preview
removed double code and cleaned up HdrRenderActivity
fixed bug for 3d splitting, changed exposure to max +30 min -30
added exif reader writer to 16/9