if the admin cleans up that dir, determining recording length from file will fail.

Added a sample.pdf that will display by default in the Demo Meeting (thanks to the new upload extension to create)

Small edit to playback.html (removed 'chat' as it's english specific).  Keep the playback clean as a basis for customization.

Refactored bbb_api.jsp to be consistent and reduced number of calls (still a bit more work needed to do)

Change comparison operator in timeline plugin