v4.4 - js error fix for civicrm/dataviz/contribute url and a warning on civicrm/dataviz

URL: civicrm/dataviz/contribute
JS error data=;

URL: civicrm/dataviz
Notice: Undefined offset: 2 in CRM_Civisualize_Page_Main->run() (line 14 of /home/vedaadmin/public_html/cafod.vedaconsulting.co.uk/public/civicrm_custom/extensions/civisualize/CRM/Civisualize/Page/Main.php).