Use travis' container infrastructure
Merge pull request #319 from jsyeo/jsyeo-travis-container

Use travis' container infrastructure
centralise my_courses
delete test folder
delete empty js files
delete empty csses
delete empty helpers
Merge pull request #321 from wangqiang1208/features/my_courses_fix

centralise my_courses
Merge branch 'development' of github.com:Coursemology/coursemology.org into Deploy