Rename from Science Swarm to Flockademic

This seems to go relatively flawless. Deployments to the new domain seem to work properly. When merging to master, Tinyletter should also be renamed, and then we're good to go. Preferably also immediately set up scienceswarm.com to redirect to flockademic.com, but since there aren't that many pointers to there yet, it's not that important.

Closes #51 (closed)