fix about page back button on mobile devices

src/components/TopBar.vue

@@ -27,8 +27,9 @@
       <v-divider vertical/>
       </v-toolbar-items>
       <v-toolbar-items v-if="$vuetify.breakpoint.mobile">
-      <v-divider vertical/>     
-        <v-dialog max-width="1200" width="1200" v-model="menuDialog" hide-overlay :fullscreen="$vuetify.breakpoint.mobile"
+      <v-divider vertical/>   
+      <v-btn text @click="toggleAbout" v-if="$route.name == 'about'"><v-icon left>chevron_left</v-icon>{{$t("back")}}</v-btn>
+        <v-dialog v-if="$route.name != 'about'" max-width="1200" width="1200" v-model="menuDialog" hide-overlay :fullscreen="$vuetify.breakpoint.mobile"
         :close-on-content-click="false" transition="dialog-top-transition">
           <template v-slot:activator="{ on, attrs }">
             <v-btn text v-bind="attrs" v-on="on">

src/locales/nor.json

@@ -29,6 +29,8 @@
     },
     "close": "Lukk",
     "choose": "Velg",
+    "back": "Tilbake",
+    "back_to_results": "Tilbake til søkeresultater",
     "pos": {
         "ALL": "alle ordklasser",
         "NOUN": "substantiv",