Add password reset localization and chat configuration

- Implemented German and English localization for password reset functionality.
- Added WebSocket URL resolution logic in chat services to support various environments and configurations.
- Created centralized chat configuration for event keys and payload mappings.
- Developed RoomsView component for admin chat room management, including create, edit, and delete functionalities.

frontend/src/views/social/GuestbookView.vue

@@ -7,7 +7,7 @@
             <div v-for="entry in guestbookEntries" :key="entry.id" class="guestbook-entry">
                 <img v-if="entry.image" :src="entry.image.url" alt="Entry Image"
                     style="max-width: 400px; max-height: 400px;" />
-                <p v-html="entry.contentHtml"></p>
+                <p v-html="sanitizedContent(entry)"></p>
                 <div class="entry-info">
                     <span class="entry-timestamp">{{ new Date(entry.createdAt).toLocaleString() }}</span>
                     <span class="entry-user">
@@ -30,6 +30,7 @@
 <script>
 import { mapActions, mapGetters } from 'vuex';
 import apiClient from '@/utils/axios.js';
+import DOMPurify from 'dompurify';
 
 export default {
     name: 'GuestbookView',
@@ -73,6 +74,9 @@ export default {
                 console.error('Error fetching image:', error);
             }
         },
+        sanitizedContent(entry) {
+            return DOMPurify.sanitize(entry.contentHtml);
+        },
     },
     mounted() {
         this.loadGuestbookEntries(1);