Update mobs mod

- api.lua (many improves, chicken egg more frequent, NPC attack nearly
mobs, textures code, etc…)
- Bee (spawn on group:flower now, textures code updated)
- Bunny (textures code updated)
- Chicken (two times more eggs, textures code updated)
- Cow (textures code updated)
- Creeper (finish reorganize the code, textures code updated, new eggs
inventory texture)
- Dirt Monster (textures code updated)
- Dungeon Master (textures code updated)
- init.lua (small credits tweaks)
- Kitten (textures code updated, now drop sometimes farming:string)
- Lava Flan (textures code updated, now 3 can spawn per chunck)
- Mese Monster (textures code updated)
- NPC (textures code updated, revert give raw meat versus health code
for tests)
- Oerkki (textures code updated, now 1 light damage)
- Rat (textures code updated)
- Sand Monster (textures code updated)
- Sheep (textures code updated, now give 2 to 3 wool when sheared)
- Spider (textures code updated, change credits, comments our
modifications)
- Stone Monster (textures code updated)
- Tree Monster (textures code updated)
- Warthog (textures code updated)
- Wolf (finish reorganize the code, textures code updated, add spawner
egg and an inventory texture)
- Tweaks some sounds

mods/mobs/dirtmonster.lua

@@ -15,9 +15,8 @@ mobs:register_mob("mobs:dirt_monster", {
 	visual = "mesh",
 	mesh = "mobs_stone_monster.x",
 	drawtype = "front",
-	available_textures = {
-		total = 1,
-		texture_1 = {"mobs_dirt_monster.png"},
+	textures = {
+		{"mobs_dirt_monster.png"},
 	},
 	visual_size = {x=3, y=2.6},
 	blood_texture = "default_dirt.png",