Merge doll functions
Removed comma left over from copypaste
oops: add mapgen.h
yoink house, gas station, parks etc out of if-else-congaline-of-doom
simplify tab drawing code
Reduced creepy doll spawn rate
Merge pull request #4441 from Dimensiomancer/Dolltalk

Talking doll gets phrases, Rarely spawns as a creepy doll with less pleasant phases.
Allows zui quan to be selectable as martial art
Merge removing metal tanks from vehicles with liquid in them, and unnecessary looping removal.
Reverse weird trend of setting monster moves to a particular value instead of decrementing them.
Merge pull request #4444 from Dimensiomancer/zuiquan

Allows zui quan to be selectable as martial art
More insect spawns
Change id, typo

The whole malt whiskey was in response to have another container for
whiskey rather than the glass jars spawn - would there be a better way
to have the barrel spawn w/ just normal whiskey?
Add new generic speech snippet handling functions.
Migrate mi-go speech handling to new generic functions.
Migrate doll and creepy doll speech handling to new generic functions.
Fix off-by-one error in speech handling function.
Add a few more creepy doll text snippets.
Giant insect spawn frequency increases as time goes on
Move church mapgen to building_generation.cpp. Amen.