Fix leaked globals.
Added the new door textures
Pine tree, pine needles, pine sapling and pinewood nodes, including textures by Splizard and Cisoun
Fix some undeclared global variables
Fix various fire sound bugs
Add missing groups to pine sapling
Add all saplings to group sapling
Fix possible stacking of books in bookshelf
Original author: @MT-Modder
Allow the group book to be placed into bookshelfs
Dont dry out soil if unloaded blocks are nearby
Move leafdecay doc to game_api.txt
Set param2 to 1 if player places leaves
Fix visibility of global/local dye tables
Move doc for dyes to game_api.txt
Add a minetest.conf.example with all available settings
Remove remains of weather
Remove remains of finite liquids from bucket mod
This reverts commit 79856c914d5b9d3eb43bec78840ee811880b30ff.
Rewrite furnace
* Move furnace related code into furnace.lua
* Move duplicated code into functions
* Rewrite ABM:
	* Easier to follow strcuture (no returns in the middle)
	* No unnecessary calls to get_craft_result
	* Split logic and "visual feedback" (a bit)
	* Fewer calls to meta:set and meta:get
	* Better feedback on the current state of the furnace
Correct node definitons for pine saplings and pine needles