Fixed WhatsApp unread code

Fixes #1189

app/store/ServicesList.js

@@ -28,7 +28,7 @@ Ext.define('Rambox.store.ServicesList', {
 			,description: locale['services[0]']
 			,url: 'https://web.whatsapp.com/'
 			,type: 'messaging'
-			,js_unread: 'function checkUnread(){var a=document.getElementsByClassName("infinite-list-item"),b=0;for(i=0;i<a.length;i++)if(!(a[i].getElementsByClassName("icon-muted").length>0||0===a[i].getElementsByClassName("unread-count").length)){var c=parseInt(a[i].getElementsByClassName("unread-count")[0].innerHTML.trim());b+=isNaN(c)?0:c}updateBadge(b)}function updateBadge(count) { if (count && count >= 1) { rambox.setUnreadCount(count); } else { rambox.clearUnreadCount(); } }setInterval(checkUnread,1e3);'
+			,js_unread: 'function checkUnread(){var i=0;document.querySelectorAll(".unread").forEach(function(e){0===e.querySelectorAll("[data-icon=muted]").length&&i++});updateBadge(i)}function updateBadge(count) { if (count && count >= 1) { rambox.setUnreadCount(count); } else { rambox.clearUnreadCount(); } }setInterval(checkUnread,1e3);'
 			,dont_update_unread_from_title: true
 		},
 		{