New sounds
Separate formspecs of active furnace and chests

Makes its possible to override formspecs by mods
Use louder footstep sound as dug_node
Make dry shrubs buildable_to
Generate clay with register_ore()
Add bubble texture for drowning
Add lavacooling sounds
Call on_rightclick from buckets
Add support for walkable plants
Mese and Diamond ore description consistancy.

Merely creates consistancy in the in-game naming of the ores.