fixes template errors

keep tos untranslated

formatting fixes

Remove unused course_filter page

removes university_profile urls and templates

removes all university_profile views

remove news from templates/index

Conflicts:
	lms/djangoapps/courseware/tests/test_views.py

Only render the chat widget if both the site has enabled it in the
`MITX_FEATURES` and if the course has enabled it. In addition, fail
gracefully with a log warning if the `JABBER_DOMAIN` is not set, and
do not try to render the widget. However, do go ahead and render the
rest of the courseware.

jQuery already available across the whole site at the top level, so
no need to include it again specifically for the chat widget.

Embed a chat widget (much like the calculator widget) into the
courseware. To use, you must point it at an ejabberd box,
configured as `JABBER_DOMAIN` in the settings.

Fixed broken tests.  Made the hint manager enabled in testing environments - this lets us test the hint manager.

Finished prototype of hint moderation view.  Began re-writing tests of the crowdsource hinter module.  (Old tests no longer cover all the code, now that moderation has been added.)

Added moderation feature - you can now choose to hold all hints for moderator approval before showing.

Fixed broken tests.  Made the hint manager enabled in testing environments - this lets us test the hint manager.

Finished prototype of hint moderation view.  Began re-writing tests of the crowdsource hinter module.  (Old tests no longer cover all the code, now that moderation has been added.)

Added moderation feature - you can now choose to hold all hints for moderator approval before showing.

Optionally email students on enroll/un-enroll actions
by instructor from enrollment tab in LMS.

Highlights:
* The url '/shib-login/' interfaces with apache/mod_shib via
  request.META to handle shibboleth login and registrations
* Courses can designate 'enrollment_domains' to limit enrollment
  to users with a linked ExternalAuthMap verified by a particular
  identity provider
* Tests
* Logging

 Changes to be committed:

	new file:   common/djangoapps/external_auth/migrations/0001_initial.py
	new file:   common/djangoapps/external_auth/migrations/__init__.py
	new file:   common/djangoapps/external_auth/tests/test_shib.py
	modified:   common/djangoapps/external_auth/views.py
	modified:   common/djangoapps/student/views.py
	modified:   common/lib/xmodule/xmodule/course_module.py
	modified:   lms/djangoapps/courseware/access.py
	modified:   lms/djangoapps/courseware/tests/test_access.py
	modified:   lms/envs/common.py
	modified:   lms/envs/dev.py
	modified:   lms/envs/test.py
	modified:   lms/templates/courseware/course_about.html
	modified:   lms/templates/dashboard.html
	modified:   lms/templates/extauth_failure.html
	modified:   lms/templates/navigation.html
	modified:   lms/templates/register.html
	modified:   lms/templates/signup_modal.html
	modified:   lms/urls.py
	renamed:    lms/wsgi_apache.py -> lms/wsgi_apache_lms.py

Rename fields in CourseTaskLog, including a task_key column for indexing.  Use 'rescore' instead of 'regrade'.  Clean up task submission.

column from task-in-progress table).

CourseTaskLog fully after task submission, so it works in Eager mode
(for testing).

from client.  Tasks.py remains the task implementations running on the
celery worker.

In particular, move status message generation out of task thread to client side.

Add call to MakoMiddleware() to initialize templates in celery worker server.

Pass task_ids by POST properties (as a list) to collect task progress status.

Add CourseTaskLog, and make calls to regrading.

Add regrading implementation, and hack the marshalling of request.

lms - adds back in missing/previously added .sr screen reader-focused styling and references in place of the .visuallyhidden application

courseware active location, suppress browser form validation, and progress graph accessibilit changes

Much like the work done on the default (unauthenticated) index view,
adjust the background image (actually, let the CSS handle it instead
of an embedded `style` attribute in the HTML). Other adjustments
(language, logo) are made for Stanford specifically and need to be
reworked for general theming.