made jei recipe transfer more strict when keeping items on the table

few cleanup

src/main/java/appeng/core/sync/packets/PacketInventoryAction.java

@@ -112,10 +112,6 @@ public class PacketInventoryAction extends AppEngPacket
 
 	public PacketInventoryAction(final InventoryAction action, final IJEITargetSlot slot, final IAEItemStack slotItem ) throws IOException
 	{
-		if( action != InventoryAction.PLACE_JEI_GHOST_ITEM )
-		{
-			throw new IllegalStateException( "invalid packet, client cannot post inv actions with stacks." );
-		}
 
 		this.action = action;
 		if (slot instanceof SlotFake)

src/main/java/appeng/core/sync/packets/PacketJEIRecipe.java

@@ -303,7 +303,7 @@ public class PacketJEIRecipe extends AppEngPacket
 		{
 			for( ItemStack option : this.recipe[slot] )
 			{
-				if( is.isItemEqual( option ) )
+				if( ItemStack.areItemStacksEqual( is, option ) )
 				{
 					return is;
 				}