Add a way to delete recipe

backend/templates/recipe_edit.html

@@ -20,6 +20,19 @@
     <textarea
         id="text-area-description">{{ recipe.description }}</textarea>
 
+    <label for="input-servings">Servings</label>
+    <input
+        id="input-servings"
+        type="number"
+        step="1" min="1" max="100"
+        value="
+            {% match recipe.servings %}
+            {% when Some with (s) %}
+                {{ s }}
+            {% when None %}
+
+            {% endmatch %}"/>
+
     <label for="input-estimated-time">Estimated time [min]</label>
     <input
         id="input-estimated-time"
@@ -30,7 +43,7 @@
             {% when Some with (t) %}
                 {{ t }}
             {% when None %}
-                0
+
             {% endmatch %}"/>
 
     <label for="select-difficulty">Difficulty</label>
@@ -61,6 +74,8 @@
     >
     <label for="input-is-published">Is published</label>
 
+    <input id="input-delete" type="button" value="Delete recipe" />
+
     <div id="groups-container">
 
     </div>