course model specs
implement course model
course_user specs
implement course_user model
course and user relations
Merge pull request #20 from coursemology-collab/wangqiang/course-models

course and enrolment models
install gem cancancan
ability class to handle permissions of admin
Merge pull request #24 from coursemology-collab/wangqiang/authorization

authorization using cancancan
Use jQuery from a CDN in production; it will fallback to our local copy if that fails.
Add the Bootstrap SASS gem.
Add the Bootstrap basic template.
Inject the current controller and action into the page content so that CSS can be selectively applied to pages.
Shorthand, without the need for the else.
Override rails_utils to check for HighVoltage.