Allow more time for the virtual admin to be caught

Problems were occurring for students with slow wireless connections

nieuws/admincheck.js

@@ -2,5 +2,5 @@ var page = require('webpage').create();
 page.open('http://localhost/nieuws/login.php', 'post', 'gebruikersnaam=Admin&wachtwoord=sesame', function() {
     setTimeout(function(){
         phantom.exit();
-    }, 1000);
+    }, 3000);
-});
+});