fix too long entries in contacts-menu

Signed-off-by: Simon L <szaimen@e.mail.de>

Author: szaimen

core/src/views/ContactsMenu.vue

@@ -133,10 +133,13 @@ export default {
 			.body {
 				flex-grow: 1;
 				padding-left: 8px;
+				min-width: 0;
 
 				div {
 					position: relative;
 					width: 100%;
+					overflow-x: hidden;
+    				text-overflow: ellipsis;
 				}
 
 				.full-name, .last-message {