Added bamboo, sugar cane and more.

In this update of Sapixcraft I added the bamboo and sugar cane items. I changed the furnace to use the new cobblestone texture and make some minor changes to the ice and color changes to the rails

New things:

bamboo item
sugar cane item

Changed things:

lapis lazuli item
furnace top
furnace side
furnace front on
furnace front
ice
blue ice
packed ice
frosted ice 1
frosted ice 2
frosted ice 3
activator rail on
activator rail
detector rail on
detector rail
powered rail on
powered rail
rail corner
rail