Rename models/textures to be closer to original names

ender_dragon.lua

@@ -43,9 +43,9 @@ mobs:register_mob("mobs_mc:enderdragon", {
 	--collisionbox = {-0.5, 0.5, -0.5, 0.5, 1.2, 0.5},
 	collisionbox = {-0.5, 0.01, -0.5, 0.5, 1.2, 0.5},
 	visual = "mesh",
-	mesh = "mobs_mc_ender_dragon.b3d",
+	mesh = "mobs_mc_dragon.b3d",
 	textures = {
-		{"mobs_mc_enderdragon.png"},
+		{"mobs_mc_dragon.png"},
 	},
 	visual_size = {x=1, y=1},
 	makes_footstep_sound = true,

horse.lua

@@ -194,7 +194,6 @@ mobs:register_mob("mobs_mc:zombie_horse", zombie_horse)
 -- Donkey
 local d = 0.86 -- donkey scale
 local donkey = table.copy(horse)
-donkey.mesh = "mobs_mc_horse.b3d"
 donkey.textures = {{"mobs_mc_horse_creamy.png"}}
 donkey.animation = {
 	speed_normal = 25,

polar_bear.lua

@@ -18,7 +18,7 @@ mobs:register_mob("mobs_mc:polar_bear", {
 	hp_max = 30,
 	collisionbox = {-0.7, -0.01, -0.7, 0.7, 1.39, 0.7},
 	visual = "mesh",
-	mesh = "mobs_mc_polar_bear.b3d",
+	mesh = "mobs_mc_polarbear.b3d",
 	textures = {
 		{"mobs_mc_polarbear.png"},
 	},

skeleton_wither.lua

@@ -21,7 +21,7 @@ mobs:register_mob("mobs_mc:witherskeleton", {
 	group_attack = true,
     collisionbox = {-0.35, -0.01, -0.35, 0.35, 2, 0.35},
 	visual = "mesh",
-	mesh = "mobs_mc_wither_skeleton.b3d",
+	mesh = "mobs_mc_witherskeleton.b3d",
 	textures = {
 		{"mobs_mc_witherskeleton.png"},
 	},

slime+magma_cube.lua

@@ -129,7 +129,7 @@ local magma_cube_big = {
 	visual_size = {x=12.5, y=12.5},
 	textures = {{ "mobs_mc_magmacube.png" }},
 	visual = "mesh",
-	mesh = "mobs_mc_magma_cube.b3d",
+	mesh = "mobs_mc_magmacube.b3d",
 	blood_texture = "lava_slime_blood.png",
 	makes_footstep_sound = true,
 	sounds = {

villager_zombie.lua

@@ -17,7 +17,7 @@ mobs:register_mob("mobs_mc:villager_zombie", {
 	hp_max = 75,
     collisionbox = {-0.35, -0.01, -0.35, 0.35, 2, 0.35},
 	visual = "mesh",
-	mesh = "mobs_mc_villager_zombie.b3d",
+	mesh = "mobs_mc_zvillager.b3d",
 	textures = {
 		{"mobs_mc_zombie_butcher.png"},
 		{"mobs_mc_zombie_farmer.png"},