Merge branch 'feature/cale/cms-master' of github.com:MITx/mitx into feature/cdodge/import-course-info

Conflicts:
	lms/djangoapps/courseware/module_render.py

fixed typo

Fix alex vsepr 2 mitx

add to existing test cases to exercise the 'course extras as modules' work in the CMS import. Also add to the existing 'full' test data collection to include policy, tabs, etc.

Support blackout periods for restricting student forum posts per class

Implement basic ability to close off a forum for a given course such that Students can no longer post or edit, but can still view.

make sure paths are path() objects rather than strings so that the '/' operator works as expected. Also some path cleanup and remove duplicate computation

Feature/victor/inputtypes refactor

Add HD control to video player

Add changelogs for the CMS and LMS

Add google analytics to course info pages

Update Job Page with new positions

make course about view methods render the about content as a module, so we get all the url rewriting goodness. Also, since we're now handling the url re-writing via the module get_html pipelines, we can remove the link rewriting inside the xmodules itself - which is good because there's a wierd bug in lxml.html rewriting

Allow optional advertised_start metadata in Course

Merge branch 'feature/cale/cms-master' of github.com:MITx/mitx into feature/cdodge/import-course-info

Add MySQL-python to the requirements.

added handling for long class names in the header

moved error message into form area; tweaked cancel behavior

Merge branch 'feature/cale/cms-master' of github.com:MITx/mitx into feature/cdodge/import-course-info