Fix tests for video
adds test files for video
adds tests for video xmodule and mongo
Revert "adds tests for video xmodule and mongo"

This reverts commit 67ab28f65db8bfff7cd5075974cbc8ffd97d6d3b.
Revert "adds test files for video"

This reverts commit 8e2b8bb5ecef6935a1592588ed6af4f79197c0c4.
Fix video_caption.coffee and tests after merge
Fix tests for firefox
move python video tests to lms/djangoapps/courseware/tests/
add more docs
revert xmodule/tests/__init__.py changes
video module: `_get_timeframe` -> `get_timeframe`
video module: remove old methods
BaseTestXmodule: create module on the fly
video module: remove `get_progress` testing, cause we already deleted this method
video module: use `location.html_id` method in tests
fix BaseTestXmodule