Renamed cFinishGenSingleBiomeSingleTopBlock to cFinishGenSingleTopBlock
Now accepts a vector of biomes and a vector of allowed blocks.
Forgot Mesa Plateau biome.
Using suggestions
SingleTopBlock: All blocktypes and biometypes get initialized properly
Fixed comment above cFinishGenSingleTopBlock
Some finishing touches
Removed whitespace
fixed dead bush comment
Merge pull request #1254 from mc-server/SingleTopBlockFinisher

Renamed cFinishGenSingleBiomeSingleTopBlock to cFinishGenSingleTopBlock