Copy over other applets and homepage at some point

[juliavdkris]

The original PRIME server hosts more than just the course graph, this will of course also need to be copied at some point. These are all static applications so will be super straightforward, but just something to keep in mind for when we deploy the new server :)

(For example: https://prime-applets.ewi.tudelft.nl/apps/linear-algebra/transformations/)