Typo: datetime -> datepicker.
Merge branch 'lessonbin' of github.com:fuzzie360/coursemology.org into lessonbin
Move access control over to the controller and out of the model.
Merge branch 'lessonbin' of github.com:fuzzie360/coursemology.org into lessonbin
increase file upload size limit to 50M
Merge branch 'lessonbin' of git://github.com/fuzzie360/coursemology.org into dev/raymoond_dev
Merge branch 'dev/raymoond_dev' of github.com:Coursemology/coursemology.org into dev/raymoond_deploy