Conflicts:
	static/simplewiki

Number of attempts remaining shown below -- not on button. 

The only thing we used from that folder was the auto-suggest
JavaScript, and that got moved over to mitx/static/js/simplewiki

Wikieditor

Changed the format of the check/submit button so that the exam
submission makes more sense; added a disclaimer to the enrollment
number so that new students know that they will be disadvantaged.

Use the base package name as the provided value, rather than the path, because .deb packages can't start with /

Added some styles to make videos more cohesive