edx/edx-platform — pull request #492 by peter-fogg (2013-07-24 20:06:23+00:00)
Title: Fix word cloud modules not exporting correctly.

Fixes STUD-146. I also looked through other modules to see if this might be an issue -- it looks like word cloud and video are the only ones which inherit from `RawDescriptor` and could end up with no data.