Beta 2.0.0.h for 1.14.4

This includes a trainer/npc overhaul, so will remove any existing nurses/professors from world. it re-introduces trades with the npcs.
There is also a set of improvements to worldgen code, though they need a bit more testing, and some of the legends stuctures need updating to use the new features.
This also removes the tbl renderer, this converts anything that was a tbl model into a missingno, hopefully this will incentivize re-making of those models.