Comment 3 for bug 1242467

I've contacted the Kapeli developer and he thinks it will be great to
support docsets in DevHelp or to have a docset->devhelp2 converter.

However, it's not allowed to silently download docsets from the Kapeli
web site. We can either instruct user to download and install the
docsets himself in a user manual or to provide a link to Kapeli web
site inside the DevHelp application.