By transparently proxying between the XModuleDescriptor and the XModule,
and between their runtimes, we can make them act as a single class, so
that we can swap in an actual XBlock instead.

Added missing file.~
Undid a mistake.
Copied Python tests from video_alpha1.
moves TestLogic to __init__.py
reorginizes xmodule logic tests
adds docstrings for poll tests
adds docstring for word cloud and conditional tests
adds docstrings for video alpha tests
adds videoalphafactory for tests, not finished
adds imports
Bug fixing.
fix video/videoalpha tests
Updated lettuce test. Now it is aware of the fact that Video and Video Alpha players have different base CSS classes.
Removed REFACTOR comments.
Turn off autoplay for Video Alpha in Studio.
Carry over fix for bug where in Firefox changing to speed 1.0 has no effect.
Carry over JavaScript Jasmine tests from jmclaus/videoalpha2_js branch.
Exporting state object from main function of Video Alpha.
More stuff from jmclaus/videoalpha2_js branch.
Specs in html5_video.js all pass except ten of them. Cleaned code a bit and moved it out of display_spec.js
One more spec passes
Fixed remaning tests in spec/../html5_video.js test suite. Removed test video files.
Added JavaScript Jasmine tests for main of Video Alpha 2.
adds test for volume control and updates helper file for videoalpha

This makes the LMS use an XBlock's student_view, rather than an
XModule's get_html to render for display. However, it does not yet use
wrap_child to handle instructor debug information or url rewriting.

[LMS-219]