Move rendering IDs to Common Proxy classes to appease ExtraUtils.

src/main/java/mekanism/generators/common/GeneratorsCommonProxy.java

@@ -27,6 +27,7 @@ import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.inventory.Container;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.world.World;
+import cpw.mods.fml.client.registry.RenderingRegistry;
 import cpw.mods.fml.common.registry.GameRegistry;
 
 /**
@@ -36,6 +37,8 @@ import cpw.mods.fml.common.registry.GameRegistry;
  */
 public class GeneratorsCommonProxy
 {
+	public static int GENERATOR_RENDER_ID = RenderingRegistry.getNextAvailableRenderId();
+
 	/**
 	 * Register normal tile entities
 	 */