vector data changes
Working copy of vector and mult recorder friendly html 5 whiteboard and upload
first working  version of plurual LC whiteboards with optional non erasable backgrounds
Made a few changes so that drawingboard.js now words with plural boards
Tweaks to set up backgrounding for drawingboard.js
gaargh. Forgot to enable the pencil icon. enabled now.
fixed bug affecting calls to fetchwhiteboardforsubmission but without vector info
tweaked image upload so that files in draft area are overwritten
when autosaving
updated version