[kronolith] problem with display free/busy URL

[Amith Varghese]

I have noticed that in kronolith if you have it set so that kronolith displays
tasks and meetings (nag & moment) in the calendar view, you need to log in to
view the free/busy URL.  This is because in lib/base.php of both files there
exists the following line (these files get included through their API which
kronolith uses to generate the free/busy URL):

if (!Auth::getAuth() && !$registry->allowGuests()) {
    Horde::authenticationFailureRedirect();
}

Now of course you can get around this by allowing guests, but is there any other
way to avoid this?  Maybe I'm missing something here...

Amith