LDAP: user proxy must support canChangeAvatar too

apps/user_ldap/user_proxy.php

@@ -163,6 +163,15 @@ class User_Proxy extends lib\Proxy implements \OCP\UserInterface {
 		return $this->handleRequest($uid, 'getDisplayName', array($uid));
 	}
 
+	/**
+	 * @brief checks whether the user is allowed to change his avatar in ownCloud
+	 * @param $uid string the ownCloud user name
+	 * @return boolean either the user can or cannot
+	 */
+	public function canChangeAvatar($uid) {
+		return $this->handleRequest($uid, 'canChangeAvatar', array($uid));
+	}
+
 	/**
 	 * @brief Get a list of all display names
 	 * @returns array with  all displayNames (value) and the corresponding uids (key)