Add Gemology Base to Fungal Cavern

[AardWolf]

Gemology Base affects attraction rate of mice in all levels so it should be its own stage. Since there are currently no stages there we will need a "not gemology" stage as well.

[AardWolf]

Once added and versions have updated we can move old hunts into the appropriate stages - in FC with gemology base goes to that stage, in FC without gemology base goes into the "not gemology" stage.

[hymccord]

Implemented via #440
Keeping issue open for DB Cleanup