Fix Lettuce Tests for Drupal site

Fix marketing links in password reset pages

the actual urls

getting closed fast enough.

Disable courseware links on marketing site and dashboard if courseware is not accessible

LMS Notes Djangoapp

Jarv/move edx requirements

If a course is not started, the course image and title on the dashboard link
to the course about page. Because the LMS course about pages do not exist
(i.e. 404) with the marketing site enabled, we simply do not use a link if
the course has not started.

If a user is already registered for a course but the course has not started
yet, display a grey button that says "you are registered" and goes nowhere
instead of the blue "access courseware" button, which goes to the LMS course
about page (which 404s).

Feature/will/ci lettuce tests

Resolved conflict with changes to Rakefile in master

Conflicts:
	rakefile

Merge branch 'feature/will/ci-lettuce-tests' of https://github.com/edx/edx-platform into feature/will/ci-lettuce-tests

Install python prereqs before trying to run django or install requiremen...

Studio - Resolving incorrect Sans Serif Sass Variable Definition

studio - fixes Sass variable defintion to ensure the older -serif references the proper new -sans-serif variable

Feature/cale/maintain dev environment

Make the externally facing asset watch commands wait for user intervention, and add internal tasks that only run as long as the rake process