Move list of namespaces used for children pages to a configurable array

action.php

@@ -46,7 +46,7 @@ class action_plugin_childrenpages extends DokuWiki_Action_Plugin {
 			return;
 		}
 		// Get the list of children pages
-		$children_types = [ 'animation', 'gameplay', 'dev', 'talk' ];
+		$children_types = $this->getConf('children_list');
 		foreach ( $children_types as $child_type ) {
 			$child_label = $this->getLang("btn_$child_type");
 			$this->addMenuItem($event, $child_type, $child_label);

conf/default.php

@@ -0,0 +1,3 @@
+<?php
+
+$conf['children_list'] = [ 'animation', 'gameplay', 'dev', 'talk' ];

conf/metadata.php

@@ -0,0 +1,3 @@
+<?php
+
+$meta['children_list'] = [ 'array' ];

lang/en/settings.php

@@ -0,0 +1,3 @@
+<?php
+
+$lang['children_list'] = 'List of namespaces reserved for children pages';