Create a recently viewed/favorites list on a per user account basis

[rsacksteder]

It would be handy for users to be able to quickly reference recently viewed fingerings or fingerings that they often have to look up (a "favorite fingering"). For this reason, it would be nice to have a recently viewed/favorite fingering list or menu that we managed on a per user basis. This was a suggestion from a fellow CS student so we will try and address it if we have time left near the end of the project.