html/show.tmpl: Don't allow line breaks in some link texts

html/show.tmpl: Don't allow line breaks in some link texts

If "QA Page" or "Mail Archive" get separated on two lines,
it looks just ugly. Unfuzzy the languages where no space
exists in the translation. Apply the same change for fr
since I'm reasonably certain that's the right thing to do.
Leave the more (to me) more exotic languages alone.