Fixes #675 No disabled feature should log spam or crash anymore.

Deprecates the old usage of the AEItemDefinitions via the direct method access of

* blocks()
* parts()
* items()
* materials()

and thus use the new re-direct via definitions().

All definitions are now initialized, no matter what. But SubItems, Items and Blocks are not registered, if by chance are disabled.

src/main/java/appeng/parts/automation/BlockUpgradeInventory.java

@@ -0,0 +1,41 @@
+package appeng.parts.automation;
+
+
+import net.minecraft.block.Block;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemBlock;
+import net.minecraft.item.ItemStack;
+
+import appeng.api.config.Upgrades;
+import appeng.tile.inventory.IAEAppEngInventory;
+
+
+public class BlockUpgradeInventory extends UpgradeInventory
+{
+	private final Block block;
+
+	public BlockUpgradeInventory( Block block, IAEAppEngInventory parent, int s )
+	{
+		super( parent, s );
+		this.block = block;
+	}
+
+	@Override
+	public int getMaxInstalled( Upgrades upgrades )
+	{
+		int max = 0;
+
+		for ( ItemStack is : upgrades.getSupported().keySet() )
+		{
+			final Item encodedItem = is.getItem();
+
+			if ( encodedItem instanceof ItemBlock && Block.getBlockFromItem( encodedItem ) == this.block )
+			{
+				max = upgrades.getSupported().get( is );
+				break;
+			}
+		}
+
+		return max;
+	}
+}