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

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

* add dummy has_access(user, location) method
* re-organize views by type of access checking needed.

* connect up views from student app
* Add initial @login_required decorators on the protected views
* Add tests for some of the basic functionality

* NOTE: successfully running the tests depends on an updated version of
  django-pipeline, which fixes a unicode bug (https://github.com/MITx/django-pipeline/commit/efaba4ac63bc635da6a728603e87e14758541ec7)

Config changes:
* Use separate db for the cms
* Run collectstatic before running tests--needed to get everything in the right place for loading pages
* fix some paths related to this
* Turn off JS compressor for CMS
* add empty test_root/uploads dir

Code changes:
* Add cms tests to check that home page and signup pages load
* Add cms account creation test
* Make github sync tests clean out repo dirs before running.

* Enable account creation
* Some code cleanups
* Fix access to nonexistent fields in the account creation view
* Formatting fixes

Acknowledge the fact that right now keystore is really just a module store. If we need a keystore that returns other objects, we can reexctract the base class into it's own module again

Make location into a named tuple, and use it more as a first class entity, rather than URL for identifying content

Move the resources_fs abstraction into the primary DescriptorSystem, as it is needed for more than just XMLParsing

Revert "Make import work via mako again, to unblock others while I work on making the LMS work using XModuleDescriptors"

This reverts commit 6fdf44fe.

Make import work via mako again, to unblock others while I work on making the LMS work using XModuleDescriptors

Remove semantically meaningless sections from course.xml by moving their attributes onto the contained element. If there is more than one contained element, turn the section into a sequence. Also handles includes

Also:
Render all XModuleDescriptors in the cms the same way
Default them to editing raw xml, if there is no specific module for them