Show more information about a class

[IoanaAlexandru]

At the moment, we're only using information imported from Moodle + user-added info to show on the class page. We do, however, have info imported from studenti.pub.ro in the database as well, and it would be nice if we could e.g. show the number of credits each class has.

This is an interesting problem, since we need to find out a way to map the IDs in Moodle to the names in studenti.pub.ro.