Improve admin dashboard

src/client/app/common/views/filters/bytes.ts

@@ -1,6 +1,7 @@
 import Vue from 'vue';
 
 Vue.filter('bytes', (v, digits = 0) => {
+	if (v == null) return '?';
 	const sizes = ['B', 'KB', 'MB', 'GB', 'TB'];
 	if (v == 0) return '0';
 	const isMinus = v < 0;

src/client/app/common/views/filters/number.ts

@@ -1,5 +1,6 @@
 import Vue from 'vue';
 
 Vue.filter('number', (n) => {
+	if (n == null) return 'N/A';
 	return n.toLocaleString();
 });