Keep track of courses that have been renamed

[ap-1]

I mean both renaming in terms of course number (i.e. 15-462 becoming 15-362) and renaming in terms of course title (i.e. Nature of Language becoming Introduction to Linguistics).

It would be helpful to display this information somewhere on the CourseCard rather than just have duplicated entries for classes that have been renamed.

We need to have knowledge of the courses that have undergone these changes to implement this, though, and this is likely something we will have to talk to CMU admin about