Add installer pop-help topic for URL scheme, in response to http://forum.enanocms.org/viewtopic.php?f=5&t=19
// UK lang variables
tinyMCE.addToLang('',{
insert_advhr_desc : 'Horizontale rule',
insert_advhr_width : 'Width',
insert_advhr_size : 'Height',
insert_advhr_noshade : 'No shadow'
});