Small MonoBook cleanup:

Small MonoBook cleanup:
* Eliminate the unnecessary ->skin and $skin, $this->skin is only used in one spot and we have getSkin()
* Linker::tooltipAndAccesskeyAttribs isn't &, don't + it to an empty array(), just use a short inline array instead of this var
* Elimiate all this unnecessary code in cactions and just use makeListItem. It's shorter, outputs everything this code does, AND it outputs rel="archive" on history which was missing from MonoBook.