Backward-compatible links from php urls

[programsam]

So in the past, the link to a jam was:

https://binkmusic.com/jam.php?id=824

The idea here is to add express routes that permanently redirect those urls to the new ones.

[programsam]

Doneski: https://github.com/programsam/binkjs/commit/cdc7d874f2dd71094b9247430987961e88372e2b