Courses: different behaviour for video files in c2/c3
When embedding video files in e.g. an announcement c3 behaves differently form c2 in the same browser (firefox):
- avi: starts playing immediately in c3 (not so in c2)
- mp4: asks for a plug-in in c3 (not c2) and when searching for that plug-in this results in 'er zijn geen geschikte plug-ins gevonden'
(test done with identical objects in c2 & c3)