Feature/bridger/django1.4

Feature/halogenandtoast/table of contents

Conflicts:
	common/djangoapps/util/middleware.py

improve staff_problem_info jquery, so the histogram is also toggled

disable diajgo debug toolbar on mit server (dev_ike.py)

Feature/disable staff course check in dev

re-enable ENABLE_LMS_MIGRATION in dev, fix the course check filter to use ACCESS_REQUIRE_STAFF_FOR_COURSE

change edit link showhide to use <a> instead of <input> type submit

(fixes issues with edit links in multipart problems and video)

A bunch of various fixes and de-styling

Kimth/lms coderesponse

Feature/victor/file per descriptor

* Move lazyproperty decorator into xmodule so it's accessible during tests
* add default xqueue to test system

* test enrolls in course before testing pages
* support github edit links with new file structure
* Some pep8 cleanups

* means we get the same url_name on each import of the same data.

- add 'type' and 'points' to capa_module metadata
- replace old 'title' tag with display_name

TODO:
* need unique slugs for errors so they don't overwrite each other on export.
  - try to preserve origin slug.  If not possible, generate random one.

* figure out what metadata to strip.  e.g.
 ({'data': '<problem><p><h1>Finger Exercise 1...'},
    {'data': '<problem points="1" type="lecture"><p><h1>Finger Exercise 1...'},
    False)
  - where did points and type come from?  Do we want them there?


* separate broken and non-broken test courses

* course.xml is special--has org and course attributes in addition to url_name
* strip data_dir from metadata on export
* more asserts
* work on roundtrip import-export test

* +improve test.