adds test files for video
adds tests for video xmodule and mongo
fix video tests
add more tests for Video module
add docs
Fix display.coffee and partly video_caption.coffee
adds test files for video
Fix video_caption.js
Fix video_control.coffee
Fix video_speed_control_spec.coffee and video_volume_control_spec.coffee
Fix video_progress_slider_spec.coffee
Fix video_player_spec.coffee
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
Unnecessary comment was removed
Unnecessary comments # TODO: figure out why failing were removed
Unnecessary comments were removed in files display_spec.coffee and video_control_spec.coffee
Fix test for firefox