Summary of Gradebook API Changes

Summary of API Changes

Looks like almost all the calculation changes we will have to make will be in the GradebookManagerHibernateImpl class. As a result of signature changes in that class, there may be some knock-on changes in BaseHibernateManager, which it extends, and GradebookManager, which it implements... but my best guess is that we won't have to change any signatures on the public methods, and can restrict ourselves to modifying a small number of private methods in GradebookManagerHibernateImpl. Whether this is the best place to implement these calculations may be up for some debate, and I've sent a quick email to Josh at Berkeley to see if I'm correct in thinking that we may want to break these out into a non-'Hibernate' based class.

The rest of the changes are fairly minor and involve adding extra properties or methods to data model objects, like Assignment, AssignmentGradeRecord, Category, CourseGrade, GradeableObject, and GradeRecord.