video starts and stops correctly, ability to loop from specific frame number added
resolved bug where XML saved with extra slashes in media file src
resolved bug where XML incorrectly saved MOV files as PNG
resolved bug where XML save command  autoplay, tapId and loopback data
Merge branch 'XML-bugfix' of https://github.com/camb416/Poison_2013 into XML-bugfix
autoplay bug fixes from xml load and save