Added page title function for Composition API components.

assets/js/main.js

@@ -8,6 +8,7 @@ import router from './router';
 import initStore from './store';
 import initUiObservers from './ui/observers';
 import initAuthObservers from './auth/observers';
+import setPageTitle from './set-page-title';
 
 import { formatDate, formatDuration } from './format';
 
@@ -101,12 +102,7 @@ async function init() {
 		},
 		watch: {
 			pageTitle(title) {
-				if (title) {
-					document.title = `traxxx - ${title}`;
-					return;
-				}
-
-				document.title = 'traxxx';
+				setPageTitle(title); // for Options API components
 			},
 		},
 		beforeCreate() {