separate food /non-food items from crop files, tidy code

crops/spinach.lua

@@ -1,22 +1,23 @@
 
-local S = farming.translate
+local S = minetest.get_translator("farming")
+
+-- item/seed
 
--- spinach
 minetest.register_craftitem("farming:spinach", {
 	description = S("Spinach"),
 	inventory_image = "farming_spinach.png",
-	groups = {
-		compostability = 48, seed = 2, food_spinach = 1
-	},
+	groups = {compostability = 48, seed = 2, food_spinach = 1},
+	on_use = minetest.item_eat(1),
+
 	on_place = function(itemstack, placer, pointed_thing)
 		return farming.place_seed(itemstack, placer, pointed_thing, "farming:spinach_1")
-	end,
-	on_use = minetest.item_eat(1)
+	end
 })
 
 farming.add_eatable("farming:spinach", 1)
 
--- definition
+-- crop definition
+
 local def = {
 	drawtype = "plantlike",
 	tiles = {"farming_spinach_1.png"},
@@ -37,13 +38,16 @@ local def = {
 }
 
 -- stage 1
+
 minetest.register_node("farming:spinach_1", table.copy(def))
 
 -- stage 2
+
 def.tiles = {"farming_spinach_2.png"}
 minetest.register_node("farming:spinach_2", table.copy(def))
 
 -- stage 3
+
 def.tiles = {"farming_spinach_3.png"}
 def.drop = {
 	items = {
@@ -54,6 +58,7 @@ def.drop = {
 minetest.register_node("farming:spinach_3", table.copy(def))
 
 -- stage 4
+
 def.tiles = {"farming_spinach_4.png"}
 def.groups.growing = nil
 def.selection_box = farming.select_final
@@ -67,6 +72,7 @@ def.drop = {
 minetest.register_node("farming:spinach_4", table.copy(def))
 
 -- add to registered_plants
+
 farming.registered_plants["farming:spinach"] = {
 	crop = "farming:spinach",
 	seed = "farming:spinach",
@@ -76,6 +82,7 @@ farming.registered_plants["farming:spinach"] = {
 }
 
 -- mapgen
+
 minetest.register_decoration({
 	deco_type = "simple",
 	place_on = {"default:dirt_with_grass", "mcl_core:dirt_with_grass"},