Consolidate user mounting check code

apps/files_external/appinfo/app.php

@@ -45,12 +45,9 @@ require_once __DIR__ . '/../3rdparty/autoload.php';
 \OC_Mount_Config::$app = new \OCA\Files_external\Appinfo\Application();
 $appContainer = \OC_Mount_Config::$app->getContainer();
 
-$l = \OC::$server->getL10N('files_external');
+\OC_Mount_Config::$app->registerSettings();
 
-OCP\App::registerAdmin('files_external', 'settings');
-if (OCP\Config::getAppValue('files_external', 'allow_user_mounting', 'yes') == 'yes') {
-	OCP\App::registerPersonal('files_external', 'personal');
-}
+$l = \OC::$server->getL10N('files_external');
 
 \OCA\Files\App::getNavigationManager()->add([
 	"id" => 'extstoragemounts',

apps/files_external/appinfo/application.php

@@ -45,6 +45,19 @@ class Application extends App {
 		);
 	}
 
+	/**
+	 * Register settings templates
+	 */
+	public function registerSettings() {
+		$container = $this->getContainer();
+		$backendService = $container->query('OCA\\Files_External\\Service\\BackendService');
+
+		\OCP\App::registerAdmin('files_external', 'settings');
+		if ($backendService->isUserMountingAllowed()) {
+			\OCP\App::registerPersonal('files_external', 'personal');
+		}
+	}
+
 	/**
 	 * Load storage backends provided by this app
 	 */