Renaming some files. removing empty onError closures from query_service

Author: traceypowersg

Chapter_05/recipe_book_router.dart

@@ -7,19 +7,19 @@ class RecipeBookRouteInitializer implements RouteInitializer {
       ..addRoute(
           name: 'add',
           path: '/add',
-          enter: view('view/add.html'))
+          enter: view('view/addRecipe.html'))
       ..addRoute(
           name: 'recipe',
           path: '/recipe/:recipeId',
           mount: (Route route) => route
               ..addRoute(
                   name: 'view',
                   path: '/view',
-                  enter: view('view/view.html'))
+                  enter: view('view/viewRecipe.html'))
               ..addRoute(
                   name: 'edit',
                   path: '/edit',
-                  enter: view('view/edit.html'))
+                  enter: view('view/editRecipe.html'))
               ..addRoute(
                   name: 'view_default',
                   defaultRoute: true,

Chapter_05/service/query_service.dart

@@ -23,7 +23,6 @@ class QueryService {
           Recipe r = new Recipe.fromJsonMap(recipe);
           _recipesCache[r.id] = r;
         }
-        return _recipesCache.length;
       });
   }
 
@@ -34,7 +33,6 @@ class QueryService {
           for (String category in response.data) {
             _categoriesCache.add(category);
           }
-          return _categoriesCache.length;
     });
   }