Use configured locale for timestamp formatting

src/components/LDeviceLocationPopup.vue

@@ -7,7 +7,7 @@
       <ul class="info-list">
         <li :title="$t('Timestamp')">
           <ClockIcon size="1x" aria-hidden="true" role="img" />
-          {{ new Date(timestamp * 1000).toLocaleString() }}
+          {{ new Date(timestamp * 1000).toLocaleString(locale) }}
         </li>
         <li :title="$t('Location')">
           <MapPinIcon size="1x" aria-hidden="true" role="img" />
@@ -64,6 +64,8 @@ import {
 } from "vue-feather-icons";
 import { LPopup } from "vue2-leaflet";
 
+import config from "@/config";
+
 export default {
   name: "LDeviceLocationPopup",
   components: {
@@ -120,6 +122,11 @@ export default {
       default: null,
     },
   },
+  data() {
+    return {
+      locale: config.locale,
+    };
+  },
   computed: {
     /**
      * Return the face image as a data URI string which can be used for an image's src attribute