Moved JS for drag-and-drop from global capa. Now it will load only when required, and can be specified from any course.

Remove extra RequireJS.js entry.

Add missing semicolon at the end of sequence display module javascript

Quick fixes to self assessment tests

fix tests--nosetests is overly excited about my code

Sort courses by announcement date

fix bug in instructor dashboard groups code

If there is no announcement date (in the policy metadata) then use a
heuristic to sort them.

If there is an announcement date, the use it in the heuristic to
determine if the course is new or not.

Fix/vik/remove mitxmako