Added texture pack picker
Added support for texturepacks
Texture packs can now be changed in the options menu
Adds missing import and removes strange polish print.
Removed some extra imports
Rearranged G.get_or_update_config slightly
Texture Pack Picker: Now takes effect without a restart
Due to imports, blocks.py is loaded at the main menu, hence the need to reload
But Block.__init__ does barely anything besides load textures anyway
Wheat fixes
Remove seed from inventory after planting wheat (262245030ab923172bb72f2eb3214f9f47f0de17 removed my previous changes...)
Added tools durability. In GUI more "destroyed" tools are more transparent.
Durability bugfix.
push catchup
Revert "push catchup"

This reverts commit bb9885c97a25b2870f9bcb6167474ee80ab76cb2.
cactus transparent fix.
fixed nature.py / reeds. reed can grow on reed.
Carpet. Walk through (on top?) of blocks <= 0.5