fix terminals not being usable on servers

gradle.properties

@@ -4,7 +4,7 @@ aebuild=7
 aegroup=appeng
 aebasename=appliedenergistics2
 extended=extended_life
-extendedversion=v0.54.18
+extendedversion=v0.54.19
 #########################################################
 # Versions                                              #
 #########################################################

src/main/java/appeng/container/slot/SlotCraftingTerm.java

@@ -40,7 +40,6 @@ import appeng.util.inv.AdaptorItemHandler;
 import appeng.util.inv.WrapperCursorItemHandler;
 import appeng.util.inv.WrapperInvItemHandler;
 import appeng.util.item.AEItemStack;
-import com.blamejared.recipestages.RecipeStages;
 import com.blamejared.recipestages.recipes.RecipeStage;
 import net.darkhax.gamestages.GameStageHelper;
 import net.darkhax.itemstages.ItemStages;
@@ -55,9 +54,10 @@ import net.minecraft.util.NonNullList;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
 import net.minecraftforge.fml.common.Loader;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 import net.minecraftforge.items.IItemHandler;
 
-import javax.annotation.Nonnull;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -101,6 +101,13 @@ public class SlotCraftingTerm extends AppEngCraftingSlot {
     @Override
     public ItemStack getStack() {
         if (Platform.isClient() && Loader.isModLoaded("itemstages")) {
+            return itemstageStack();
+        }
+        return super.getStack();
+    }
+
+    @SideOnly(Side.CLIENT)
+    ItemStack itemstageStack() {
         final ItemStack item = super.getStack();
         final String itemsStage = ItemStages.getStage(item);
         final String enchantStage = ItemStages.getEnchantStage(item);
@@ -109,8 +116,6 @@ public class SlotCraftingTerm extends AppEngCraftingSlot {
         if ((itemsStage != null && !GameStageHelper.hasStage(player, itemsStage))
                 || (enchantStage != null && !GameStageHelper.hasStage(player, enchantStage)))
             return ItemStack.EMPTY;
-        }
-
         return super.getStack();
     }