Release 2.0.33 (#4273)

* added function to check if meta-field is defined by a plugin
* hide un-defined meta-fields in details view
* fix default charset = utf8mb4
* remove broken DATABASE_VERSION fallback
* split off upgrade infos for version 1.x
* fix page out of range #4279

templates/activity/details.html.twig

@@ -71,7 +71,7 @@
                         </td>
                     </tr>
                 {% endif %}
-                {% for metaField in activity.visibleMetaFields|sort((a, b) => a.order <=> b.order) %}
+                {% for metaField in activity.visibleMetaFields|filter(field => field.defined)|sort((a, b) => a.order <=> b.order) %}
                     <tr>
                         <th>{{ metaField.label|trans }}</th>
                         <td colspan="3">{{ widgets.form_type_value(metaField.type, metaField.value, activity) }}</td>