BBB Additions

Hello,

I have added several tools to the whiteboard toolbar that may be of use. Also, all my commits are based off of the final 0.8 release, so any new modifications to the whiteboard since then will have to be integrated into any newer/older release. For more information, see my post here: https://groups.google.com/d/topic/bigbluebutton-dev/l6BYcLF0UCM/discussion. 

Thanks,
Ajay Gopinath