Fixes and improvements

* fixes group check on detail views
* adds check for required fields in BaseForm for showing required field hint or not in template

templates/table/generic_table_form_body.html

@@ -17,4 +17,6 @@
                 {% endfor %}
             </tbody>
         </table>
-        <small>{% trans 'Fields with * are required.' %}</small>
+        {% if form.has_required_fields %}
+        <small>{% trans 'Fields with * are required.' %}</small>
+        {% endif %}