Improved terrain smoothing for various ruins.
Ice arrows now correcly make sounds on impact.

Removed some unused texture files.
Added torn pages.

(No use yet, will add in future commits.)
Added a fuel handler for Devora.
Added assets and code for gemstone ore.
Fixed multiblocks so that I can actually use them now. :D
Added pale bricks and planks.

Crafting recipes TBI.
Added world gen code for gemstone ore.
Added recipes for the planks and pale brick.
Fixed some explosion bugs with the pale brick.

Also change the hue of the texture slightly.
Added purification-by-fire recipes for the Nyxian woods.

(TODO: recipes yield wrong wood logs).
Made all the exousium things fit their flavor better.

Held exousium will apply wither.
Exousium ore is now fist-harvestable to help prevent entrapment.
Exousic Ice Shards have been recolored.
All exousium now damages all non-undead EntityLivingBases.
Infested logs are now fist-harvestable.
Exousic dust can be used to purify infested logs and planks.
Spring code cleaning!
Removed the tooltips.

A better documentation system is required.
Will play around with ideas.
Ice arrows now break glass and ice again.

They also die when set on fire.
Added more trees to Nyx.