Template caching

Dormsbee/portal display tweaks

Use Course.number, remove final exam and content length from the course sidebar (do we have that data yet?)

Dormsbee/portal display tweaks

Conflicts:
	lms/static/sass/application.css

renames some scss files for better orginization, sets fixed widths on main containers to avoid akward scaling issues untill media queries can be added for more responsive scaling

Ccp0101/capa pythonpath

Allows for additional paths when executing code in a loncapa problem. Adds a default path of data/course/code.

Conflicts:
	lms/templates/footer.html
	lms/templates/signup_modal.html

Add fixes to notes in #182

* use 'location' instead of 'id' in views.
* still need to change names in the coffeescript--quick fix didn't work

Victor/cms more auth

* add optional author_str param to export_to_github
* pass the django user info to that param