added "settings saved" notice back

src/components/settings_modal/settings_modal_content.js

@@ -25,6 +25,9 @@ const SettingsModalContent = {
     ThemeTab
   },
   computed: {
+    currentSaveStateNotice () {
+      return this.$store.state.interface.settings.currentSaveStateNotice
+    },
     isLoggedIn () {
       return !!this.$store.state.users.currentUser
     }

src/components/settings_modal/settings_modal_content.vue

@@ -4,6 +4,25 @@
       <span class="title">
         {{ $t('settings.settings') }}
       </span>
+      <transition name="fade">
+        <template v-if="currentSaveStateNotice">
+          <div
+            v-if="currentSaveStateNotice.error"
+            class="alert error"
+            @click.prevent
+            >
+            {{ $t('settings.saving_err') }}
+          </div>
+
+          <div
+            v-if="!currentSaveStateNotice.error"
+            class="alert transparent"
+            @click.prevent
+            >
+            {{ $t('settings.saving_ok') }}
+          </div>
+        </template>
+      </transition>
       <button
         class="btn"
         @click="peekModal"