fix references to legacy encryption app name

apps/files_trashbin/lib/helper.php

@@ -115,7 +115,7 @@ class Helper
 			$entry['id'] = $id++;
 			$entry['etag'] = $entry['mtime']; // add fake etag, it is only needed to identify the preview image
 			$entry['permissions'] = \OCP\Constants::PERMISSION_READ;
-			if (\OCP\App::isEnabled('files_encryption')) {
+			if (\OCP\App::isEnabled('encryption')) {
 				$entry['isPreviewAvailable'] = false;
 			}
 			$files[] = $entry;

apps/files_trashbin/lib/trashbin.php

@@ -476,7 +476,7 @@ class Trashbin {
 	 */
 	private static function deleteEncryptionKeys(\OC\Files\View $view, $file, $filename, $timestamp, $user) {
 		$size = 0;
-		if (\OCP\App::isEnabled('files_encryption')) {
+		if (\OCP\App::isEnabled('encryption')) {
 
 			$keyfiles = \OC\Files\Filesystem::normalizePath('files_trashbin/keys/' . $filename);
 

apps/files_trashbin/tests/trashbin.php

@@ -67,7 +67,7 @@ class Test_Trashbin extends \Test\TestCase {
 		$application->setupPropagation();
 
 		//disable encryption
-		\OC_App::disable('files_encryption');
+		\OC_App::disable('encryption');
 
 		//configure trashbin
 		self::$rememberRetentionObligation = \OC_Config::getValue('trashbin_retention_obligation', Files_Trashbin\Trashbin::DEFAULT_RETENTION_OBLIGATION);

core/command/user/resetpassword.php

@@ -78,7 +78,7 @@ class ResetPassword extends Command {
 			/** @var $dialog \Symfony\Component\Console\Helper\DialogHelper */
 			$dialog = $this->getHelperSet()->get('dialog');
 
-			if (\OCP\App::isEnabled('files_encryption')) {
+			if (\OCP\App::isEnabled('encryption')) {
 				$output->writeln(
 					'<error>Warning: Resetting the password when using encryption will result in data loss!</error>'
 				);