basic shell for home page exists, along with start of color cleanup for the rest of _discussion.scss

cleaned up variables styling to sync up closer to studio, incorporated fontawesome icons into discusison home with basic positioning

cleaned up font-awesome integration to work with new mako file .scss compiling, added in initial icon references

addition of font-awesome to LMS sass vendor assets, in additio nto light organization for applicaiton.scss to match studio sass breakdown.

Change delete asset prompt to Warning type for consistency.

Make release email script wiki-friendly

Allow session backend to be configurable 

Next gen modulestore

to cms settings (it was throwing 500s for Stanford when the CMS
calls render_from_lms)

Will/fix acceptance tests

Renzo/in context progress

Fix/foldit leaderboard

set django-wiki to its most recent version

Simple port of Class2Go's chat feature

A new modulestore backed by mongo that changes the data format to
facilitate easy versioning, sharing content between courses, and fast
lookup of course structure and Scope.settings data.

Conflicts:
	cms/djangoapps/contentstore/tests/test_contentstore.py

POST requests were claiming request.method == 'PUT'

Fix/vik/studio oe

Ned/studentmodulehistory cleaner command

So, changed handlers to look for either value.