fix getVersions(), we need to get the correct user and filename

apps/files_versions/ajax/getVersions.php

@@ -1,11 +1,11 @@
 <?php
 OCP\JSON::checkAppEnabled('files_versions');
 
-$userDirectory = "/".OCP\USER::getUser()."/files";
 $source = $_GET['source'];
+list ($uid, $filename) = OCA\Files_Versions\Storage::getUidAndFilename($source);
 
 $count = 5; //show the newest revisions
-if( ($versions = OCA\Files_Versions\Storage::getVersions( $source, $count)) ) {
+if( ($versions = OCA\Files_Versions\Storage::getVersions($uid, $filename, $count)) ) {
 
 	$versionsFormatted = array();
 

apps/files_versions/lib/versions.php

@@ -35,7 +35,7 @@ class Storage {
 																	'step' => 604800),
 			);	
 
-	private static function getUidAndFilename($filename) {
+	public static function getUidAndFilename($filename) {
 		$uid = \OC\Files\Filesystem::getOwner($filename);
 		if ( $uid != \OCP\User::getUser() ) {
 			$info = \OC\Files\Filesystem::getFileInfo($filename);