Re: Dead links to documentation

[Kasper Peeters <kasper peeters phi-sci com>]

> The links to the glibmm documentation on
>
>   https://www.gtkmm.org/en/documentation.html
>
> all lead to empty pages. The only thing that works is going via the
> 'developer.gnome.org C++ Bindings' link.

And even that now leads to empty pages; there seems to be no site
anymore that carries the gtkmm docs.

If I can help getting this back online, let me know. 

Thanks,
Kasper