idea taken from homedecor_modpack and its homedecor_i18n
all translated mods have a new dependency : plantlife_i18n
translations are stored in po/pot file : one file for all mods
added french translation (almost complete)
transfered de/es/tr/pt translations to corresponding .po file
(only for some mods, unfortunately translations are incomplete)
The first one happens because `remove_node` is called
directly, calling `remove_node` for the vine below,
calling `remove_node` for the vine below, calling...
The second one happens because `get_item_group`
returns 0 for groups not set, and 0 is a truthy
value in Lua, so the code always removes the bottom
node regardless of its group rating. This interacted
funnily with doors wanting to remove their top node,
while vines wanted to remove their bottom nodes.
