Fix alternatives button showing up when not allowed

src/main/java/com/raoulvdberge/refinedstorage/screen/BaseScreen.java

@@ -191,13 +191,13 @@ public abstract class BaseScreen<T extends Container> extends ContainerScreen<T>
                         slot.slotNumber,
                         slot.getStack(),
                         slot.getSlotStackLimit(),
-                        parent -> new AlternativesScreen(
+                        ((FilterSlot) slot).isAlternativesAllowed() ? (parent -> new AlternativesScreen(
                             parent,
                             minecraft.player,
                             new TranslationTextComponent("gui.refinedstorage.alternatives"),
                             slot.getStack(),
                             slot.getSlotIndex()
-                        )
+                        )) : null
                     ));
                 }
             }
@@ -220,13 +220,13 @@ public abstract class BaseScreen<T extends Container> extends ContainerScreen<T>
                         slot.slotNumber,
                         stack,
                         ((FluidFilterSlot) slot).getFluidInventory().getMaxAmount(),
-                        parent -> new AlternativesScreen(
+                        ((FluidFilterSlot) slot).isAlternativesAllowed() ? (parent -> new AlternativesScreen(
                             this,
                             minecraft.player,
                             new TranslationTextComponent("gui.refinedstorage.alternatives"),
                             stack,
                             slot.getSlotIndex()
-                        )
+                        )) : null
                     ));
                 }
             } else {

src/main/java/com/raoulvdberge/refinedstorage/screen/FluidAmountScreen.java

@@ -14,7 +14,6 @@ import org.apache.commons.lang3.tuple.Pair;
 import javax.annotation.Nullable;
 import java.util.function.Function;
 
-// TODO here too
 public class FluidAmountScreen extends AmountSpecifyingScreen<FluidAmountContainer> {
     private int containerSlot;
     private FluidStack stack;