Fix for not showing custom fields settings on ContributionPage form

templates/CRM/Contribute/Form/ContributionPage/Settings.extra.tpl

-<div id="customData"></div>
+<div id="customData_ContributionPage"></div>
 {* include custom data js file *}
 {include file="CRM/common/customData.tpl"}
 {literal}
 <script type="text/javascript">
   CRM.$(function($) {
-    $($('div#customData')).insertAfter('.crm-contribution-contributionpage-settings-form-block table:last');
+    $($('div#customData_ContributionPage')).insertAfter('.crm-contribution-contributionpage-settings-form-block table:last');
     CRM.buildCustomData("{/literal}{$customDataType}{literal}");
   });
 </script>