Add english description for new authldap options

lib/plugins/authldap/lang/en/settings.php

@@ -13,7 +13,9 @@ $lang['binddn']      = 'DN of an optional bind user if anonymous bind is not suf
 $lang['bindpw']      = 'Password of above user';
 $lang['userscope']   = 'Limit search scope for user search';
 $lang['groupscope']  = 'Limit search scope for group search';
+$lang['userkey']     = 'Attribute denoting the username; must be consistent to userfilter.';
 $lang['groupkey']    = 'Group membership from any user attribute (instead of standard AD groups) e.g. group from department or telephone number';
+$lang['modPass']     = 'Can the LDAP password be changed via dokuwiki?';
 $lang['debug']       = 'Display additional debug information on errors';