normalize ingredient ratios to add up to 1

lib/pages/edit_recipe_page.dart

@@ -188,6 +188,12 @@ class EditRecipePageState extends State<EditRecipePage> {
           ),
           TextButton(
             onPressed: () async {
+              // Normalize ratios so they add up to 1
+              final totalRatio = pizzaRecipe.ingredients.map<double>((ingredient) => ingredient.value).reduce((a, b) => a + b);
+              for (final ingredient in pizzaRecipe.ingredients){
+                ingredient.value = ingredient.value / totalRatio;
+              }
+              
               if (pizzaRecipe.isInBox){
                 pizzaRecipe.save();
               } else {

todo.md

@@ -15,6 +15,5 @@
     
 ## Bug
 - add option to start recipe step instruction after step datetime and not completed
-- recalculate ingredient ratios to total=1 before saving when creating/editing recipes
 - when deleting recipes, it deletes 2, but not when deleting the last one
 - user should only be able to archive a pizza event that has taken place (dateTime>now)