Ignore hidden stuff in Rainloop unread counter

Fix #427.

app/store/ServicesList.js

@@ -516,7 +516,7 @@ Ext.define('Rambox.store.ServicesList', {
 			,description: 'RainLoop Webmail - Simple, modern & fast web-based email client.'
 			,url: '___'
 			,type: 'email'
-			,js_unread: 'function checkUnread(){var a=document.getElementsByClassName("badge pull-right count"),b=0;for(i=0;i<a.length;i++)parseInt(a[i].textContent.trim())%1===0&&(b+=parseInt(a[i].textContent.trim()));updateBadge(b)}function updateBadge(a){a>=1?document.title="("+a+") "+originalTitle:document.title=originalTitle}var originalTitle=document.title;setInterval(checkUnread,1e3);'
+			,js_unread: 'function checkUnread(){var a=document.querySelectorAll(".e-item .e-link:not(.hidden) .badge.pull-right.count"),b=0;for(i=0;i<a.length;i++)parseInt(a[i].textContent.trim())%1===0&&(b+=parseInt(a[i].textContent.trim()));updateBadge(b)}function updateBadge(a){a>=1?document.title="("+a+") "+originalTitle:document.title=originalTitle}var originalTitle=document.title;setInterval(checkUnread,1e3);'
 		},
 		{
 			 id: 'amium'