fix: put function call in separate document.ready function

This way our custom function is still called, even if the function call
above it fails - which it does, if the apScrollTop thingy is not
installed.

apis_core/apis_entities/templates/apis_entities/apis_templatetag.html

@@ -33,7 +33,9 @@
  console.log('apScrollTop: init');
  }
  });
- $(document).on('submit', 'form.form.ajax_form', unbind_ajax_forms);
+ });
+ $(document).ready(function() {
+ $(document).on('submit', 'form.form.ajax_form', unbind_ajax_forms);
  });
 </script>
 <script type="text/javascript">