Retirement of Capacity

[David Hurka]

> following sites still rely on Capacity in some form or another:
> 
> kpdf.kde.org
> okular.kde.org
> 

Hey,

okular.kde.org looked very similar to kpdf.kde.org until recently (April 2021)

https://invent.kde.org/websites/okular-kde-org/-/merge_requests/4

Now it looks like kde.org and uses Hugo; Capacity was not mentioned anywhere.
I believe Capacity can be turned off on okular.kde.org, while kpdf.kde.org is 
only of historical interest. (I didn’t even know it is still online.)

(For those who don’t know: KPdf turned into Okular with KDE 4, so it is mostly 
the same product but just older.)