Prevent matrix frames from explosions.

Fixes #1125

src/main/java/appeng/block/spatial/BlockMatrixFrame.java

@@ -29,6 +29,7 @@ import net.minecraft.entity.Entity;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.AxisAlignedBB;
+import net.minecraft.world.Explosion;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
 
@@ -79,6 +80,12 @@ public class BlockMatrixFrame extends AEBaseBlock implements ICustomCollision
 		return false;
 	}
 
+	@Override
+	public void onBlockExploded(World world, int x, int y, int z, Explosion explosion)
+	{
+		// Don't explode.
+	}
+
 	@Override
 	public Iterable<AxisAlignedBB> getSelectedBoundingBoxesFromPool(World w, int x, int y, int z, Entity e, boolean isVisual)
 	{