feat: add translations for offline overlay

src/components/misc/ready.vue

@@ -1,8 +1,8 @@
 <template>
 	<div class="app offline" v-if="!online">
 		<div class="offline-message">
-			<h1>You are offline.</h1>
-			<p>Please check your network connection and try again.</p>
+			<h1>{{ $t('offline.title') }}</h1>
+			<p>{{ $t('offline.text') }}</p>
 		</div>
 	</div>
 	<template v-else-if="ready">

src/i18n/lang/en.json

@@ -22,6 +22,10 @@
     "checkApiUrl": "Please check if the api url is correct.",
     "noApiUrlConfigured": "No API url was configured. Please set one below:"
   },
+  "offline": {
+    "title": "You are offline.",
+    "text": "Please check your network connection and try again."
+  },
   "user": {
     "auth": {
       "username": "Username",