Url encode the web dav url for copying

Signed-off-by: Anna Larch <anna@nextcloud.com>

Author: miaulalala

apps/files/lib/Controller/ViewController.php

@@ -266,7 +266,7 @@ public function index($dir = '', $view = '', $fileid = null, $fileNotFound = fal
 		$nav->assign('quota', $storageInfo['quota']);
 		$nav->assign('usage_relative', $storageInfo['relative']);
 
-		$nav->assign('webdav_url', \OCP\Util::linkToRemote('dav/files/' . $user));
+		$nav->assign('webdav_url', \OCP\Util::linkToRemote('dav/files/' . rawurlencode($user)));
 
 		$contentItems = [];