Merge pull request #140 from WouterJ/enable-patch

Changed to canBeEnabled

Author: dbu

DependencyInjection/Configuration.php

@@ -19,8 +19,8 @@ public function getConfigTreeBuilder()
                     ->children()
                         ->arrayNode('phpcr')
                             ->addDefaultsIfNotSet()
+                            ->canBeEnabled()
                             ->children()
-                                ->scalarNode('enabled')->defaultNull()->end()
                                 ->scalarNode('menu_basepath')->defaultValue('/cms/menu')->end()
                                 ->scalarNode('content_basepath')->defaultValue('/cms/content')->end()
                                 ->scalarNode('manager_name')->defaultNull()->end()