Load textures from mods

[aidyn89]

I have just downloaded Tremors, and TerraFirma doesn't seem to load the biomes added by it, just leaving a huge empty circle were the biome would have been. In this particular case, it's the glacier minibiome (in case it's relevant). I am still trying to figure out how to include Tremors textures to terrafirma

[mrkite]

Now that there's official mod support, we'll see about supporting them in the future.