Contact reference link not working

The contact reference link is invalid - at least if this is not a Drupal version. This is because it is currentl;y hardcoded as '/civicrm/contact/...' instead of calling the function crmURL.

File templates/CRM/Custom/Page/CustomDataView.tpl
Replace line 89 with:
<a href='

{crmURL p="civicrm/contact/view" q="reset=1&cid=`$element.contact_ref_id`"}

'>

I did a search in the source code for similar patterns, and we might have the same issue in file templates/CRM/Event/Cart/Form/Checkout/ParticipantsAndPrices.tpl, lines 65 and 75.