fix the webdavauth app

apps/user_webdavauth/appinfo/info.xml

@@ -2,10 +2,12 @@
 <info>
 	<id>user_webdavauth</id>
 	<name>WebDAV user backend</name>
-	<description>Authenticate Users by a WebDAV call</description>
-	<version>1.0</version>
+	<description>Authenticate users by a WebDAV call. You can use any WebDAV server, ownCloud server or other webserver to authenticate. It should return http 200 for right credentials and http 401 for wrong ones.</description>
 	<licence>AGPL</licence>
 	<author>Frank Karlitschek</author>
 	<require>4.9</require>
 	<shipped>true</shipped>
+	<types>
+		<authentication/>
+	</types>
 </info>

apps/user_webdavauth/appinfo/version

@@ -0,0 +1 @@
+1.1.0.0

apps/user_webdavauth/user_webdavauth.php

@@ -67,10 +67,11 @@ class OC_USER_WEBDAVAUTH extends OC_User_Backend {
 	/*
 	* we don´t know if a user exists without the password. so we have to return false all the time
 	*/
-	public function userExists( $uid ) {
-		return false;
+	public function userExists( $uid ){
+		return true;
 	}
 
+
 	/*
 	* we don´t know the users so all we can do it return an empty array here
 	*/