Added edX integration to singleStep.html

Also, added files relevant to edX integration under static/edx_include.

See edx_include.txt for instructions on how to do so.

These static files will be loaded by any file that is an iframe in edX,
and used to submit grades, etc.
Merge branch 'master' of https://github.com/csvoss/carbonate

Conflicts:
	orgo_django/app/templates/app/singleStep.html
Merge branch 'master' of https://github.com/csvoss/carbonate