Save yourself hours of LTI debugging! Copying/pasting the URL bbb-conf
--salt brings along a trailing slash, which bbb-lti does NOT
appreciate. :)

I found that Blackboard prefers to send the Instructor role within the
"urn:lti:role:ims/lis/" URN. The support was already here, I just
extended the detected roles. Hooray for Blackboard support in
BigBlueButton!

   When the SWF files is loading and starting up, the 3rd-party application maybe sending the SWF apps
   events/commands to start/stop webcam. However, these events may be lost because the SWF file isn't
   yet ready to handle the events.

fixed my botched playback merge from 3 months ago