(bug 15928) Make special pages dropdown inline

(bug 15928) Make special pages dropdown inline

There was a weird extra "|" at the end of lines in Nostalgia (probably other non-MonoBook skins too).  Upon investigation, I found that the special pages dropdown (which immediately followed that separator but on the next line) had a class="inline", which actually did nothing but whose intent was fairly obvious.  I removed the presentational class and just styled it using the id, so now the separator actually . . . separates.