put popup button also in preview section

Author: Dieterbe

lib/widgets/nutrition/forms.dart

@@ -367,7 +367,6 @@ class IngredientFormState extends State<IngredientForm> {
                       ) {
                         if (snapshot.hasData) {
                           _mealItem.ingredient = snapshot.data!;
-                          // here it could be nice to put the button to the popup
                           return MealItemValuesTile(
                             ingredient: _mealItem.ingredient,
                             nutritionalValues: _mealItem.nutritionalValues,

lib/widgets/nutrition/nutrition_tiles.dart

@@ -13,7 +13,7 @@ import 'package:wger/widgets/nutrition/nutrition_tile.dart';
 import 'package:wger/widgets/nutrition/widgets.dart';
 
 /// a NutritionTitle showing an ingredient, with its
-/// avatar and nutritional values
+/// avatar, nutritional values and button to popup its details
 class MealItemValuesTile extends StatelessWidget {
   final Ingredient ingredient;
   final NutritionalValues nutritionalValues;
@@ -29,6 +29,16 @@ class MealItemValuesTile extends StatelessWidget {
     return NutritionTile(
       leading: IngredientAvatar(ingredient: ingredient),
       title: Text(getShortNutritionValues(nutritionalValues, context)),
+      trailing: IconButton(
+        icon: const Icon(Icons.info_outline),
+        onPressed: () {
+          showIngredientDetails(
+            context,
+            ingredient.id,
+            image: ingredient.image?.image,
+          );
+        },
+      ),
     );
   }
 }