- move courseware wiki views above catch-all rule
- handle courses with no custom tabs

* still needs better error checking and testing

* specify in tabs list in course policy
  - active page tracking now done in tabs.py
  - properly handle the fact that there may be multiple textbooks

* Still need:
  - wiki pages
  - (if that's delayed, special-case syllabus support)

* also replace the external-auth-related popping up of the signup form with jquery.
Presumably it takes care of the browser specific stuff.

format should be
<ul>
<li>link</li>
<li>other link</li>
</ul>

* looks in about/{course.url_name}/ first, then in about/
* same for info/

- on first visit to courseware, go straight to first section of first chapter
- after, clicking on courseware tab sends you most recent chapter, with a link to the most recent section
  (not to section because that might be confusing, and you might want to do something else (e.g. do homework instead of watch videos)
- Moved course errors into instructor tab.

- courseware index view now redirects to most recent chapter, or first
- simplify the view a bit

- go through all students, all of their problems, save count for each answer
- return csv
- url exists, but no links to it yet
- Will need to integrate with Ike's new dashboard code

functionality - grade dump and download as csv, manage staff list,
force reload of course from xml