Titles on mediagoblin.org could use improvement

[Jef van Schendel]

The HTML titles for pages by MediaGoblin, the software, are shown
as:


-  [useful\_description] -- GNU MediaGoblin

For example:


-  My favourite picture -- GNU MediaGoblin
-  schendje's profile -- GNU MediaGoblin

Which makes sense.

But the titles on mediagoblin.org are a bit strange:


-  *Homepage:* MediaGoblin:: GNU MediaGoblin
-  *News page:* MediaGoblin
-  *Join page:* MediaGoblin:: Join the GNU MediaGoblin community
-  *Tour page:* MediaGoblin:: GNU MediaGoblin: the tour

So in some cases there's duplication, in others it could use a
better description and in almost all of these, *GNU MediaGoblin*
could be moved to the end like we do with the software.

I'm assuming some of these are residue from the previous blog
theme, and that the *News* page is generated differently, which is
why its title is the odd one out.

It'd be nice if we could improve these. :)