core: fix contest paginator

packages/ui-default/templates/contest_detail.html

@@ -45,7 +45,7 @@
             {% if handler.user.hasPriv(PRIV.PRIV_USER_PROFILE) %}
               {% if psdict[pid] and psdict[pid].rid %}
               {% set rdoc = rdict[psdict[pid].rid] %}
-              {% if handler.canShowRecord(tdoc) %}
+              {% if model.contest.canShowRecord.call(handler, tdoc) %}
                 {{ record.render_status_td(rdoc) }}
               {% else %}
                 <td class="col--status record-status--border"><a href="{{ url('record_detail', rid=rdoc._id) }}">{{ _('Submitted') }}</a></td>