Passing rotations to models

Implemented passing of rotations to models. Removed unused unlisted
properties. Included dummy grinder model. Found bugs that have to be
fixed.
Referencing #10.

src/main/resources/assets/appliedenergistics2/blockstates/tile.BlockGrinder.json

@@ -0,0 +1,8 @@
+{
+    "variants": {
+        "forward=north,up=up": { "model": "appliedenergistics2:tile.BlockGrinder" },
+        "forward=south,up=up": { "model": "appliedenergistics2:tile.BlockGrinder", "y": 180 },
+        "forward=west,up=up":  { "model": "appliedenergistics2:tile.BlockGrinder", "y": 270 },
+        "forward=east,up=up":  { "model": "appliedenergistics2:tile.BlockGrinder", "y": 90 }
+    }
+}

src/main/resources/assets/appliedenergistics2/models/block/tile.BlockGrinder.json

@@ -0,0 +1,8 @@
+{
+    "parent": "block/orientable",
+    "textures": {
+        "top": "blocks/furnace_top",
+        "front": "blocks/furnace_front_off",
+        "side": "blocks/furnace_side"
+    }
+}