PHP/Compat

* remove sources of deprecation warnings. Mostly dynamic creation of object properties.
 * some string function no longer accept null as string

includes/types/guild.class.php

@@ -8,6 +8,8 @@ class GuildList extends BaseType
 {
     use profilerHelper, listviewHelper;
 
+    public static $contribute = CONTRIBUTE_NONE;
+
     public function getListviewData()
     {
         $this->getGuildScores();