Thread:Project:Support desk/Baffled by formatting titles

At http://perfectenvirons.org/wiki/index.php?title=PERFECT_ENVIRONS_wiki:Community_portal, the software has titled the page

with:  (the contents of $wgSitename) : Community portal. This causes the site name to appear redundantly on the left and right in the browser window title and again in the page title.

I would like one of 2 solutions:

Preferred solution A: like in Wikipedia:

Wikipedia's page titled: Wikipedia:Community portal shows the browser window to be:   Wikipedia:Community portal - Wikipedia, the free encyclopedia. How can I change the Sitename "PERFECT ENVIRONS wiki" that appears in the browser after the "-" to be (only in browser frame) some other text instead like Wikipedia does?

Alternate solution B:

The page title could be:  Community portal (or Portal:Community portal), so the browser would be:  Community portal (or Portal:Community portal) - PERFECT ENVIRONS wiki but I can't find how to get to (or back to) either with a still viable Sidebar link AND WITHOUT the unwanted redirect line displayed under the title that to an initial formatting is just meaningless clutter.