Add getPrepaidReviewModuleCost()
Add purchase button, back button
Prevent alert box on errors
Set up purchase button in prepaid_student_review_module()
Add purchaseCourseRegistration()
Add purchaseStudentReviewModule()
Initial commit
Add association with PrepaidReviewModule
Add purchasePrepaidStudentReviewModule()
Replace code in postback() with calls to Purchase::purchaseFoo()
Remove comment with $jwt_decoded reference
Add getPrepaidReviewModuleJWT()
Move Product::getPrepaidReviewModuleJWT() to
PrepaidReviewModule::getJWT()
Fix method name
Move Product::getPrepaidReviewModuleCost() to
PrepaidReviewModule::getCost()
Add assignToCourse()
Add releaseUnclaimedFromCourse()
Add assignToAttendingStudents()
Remove getPrepaidReviewModuleCost() and getPrepaidReviewModuleJWT()

Moved to PrepaidReviewModule model
Add getReport()