[pmwiki-users] GroupTitle support in FixFlow, Gemini & Triad skins

[Hans]

I only now discovered Pm's recipe GroupTitle, which lets you set a
group's title as a page variable, similar as you set a page's title
with (:title ... :), just by setting (:title .. :) on a GroupHeader
or GroupFooter or GroupAttributes or a few other special pages.
I like this!

So I added support for this variable to Gemini, FixFlow and Triad
skins, to show the group title if available, as a link in the titlebar
in the usual place. All three skins are updated.

Best,
 Hans