More localization (#358)

* Translate missing items on About page

* Localize import summary dialog

* Make site menu translation reactive

* Localize import options

* Include semi colon in string

* Move API texts to frontend + better status codes

* Provide feedback to user when no meal is planned

* Fix API tests after latest rework

* Add warning for API changes in changelog

* Refactor API texts handling

* Refactor API texts handling #2

* Better API feedback

* Rearrange strings hierarchy

* Add messages upon recipe updated

* Fix 'recipe effected' typo

* Remove snackbar usage in backend

* Translate toolbox

* Provide feedback for tags CRUD

* Fix messed up merge

* Translate sign-up form

* Better feedback for sign-up CRUD

* Refactor log-in API texts handling

* No error message when user is not authenticated

* Remove unimportant console log

frontend/src/components/Recipe/RecipeEditor/index.vue

@@ -74,7 +74,7 @@
             :show-label="false"
           />
 
-          <h2 class="mt-4">{{ $t("recipe.tags") }}</h2>
+          <h2 class="mt-4">{{ $t("tag.tags") }}</h2>
           <CategoryTagSelector
             :return-object="false"
             v-model="value.tags"