Issue: Defer Navbar Tab

Currently the Wiki navbar tab is added at the same time vBulletin builds the navbar. Since we need wiki permissions, the index info, and if we're on the page, the special pages, this adds up to 3 queries before we've gotten to the real content.

Put some temporary HTML in the navbar and set the selected tab as usual, but defer the navbar insertion until global_complete. By that time, it will be likely we already got the wiki permissions and index at least as part of other queries.

Potentially a -2 to queries on some pages, almost definitely -1 (definitely on wiki pages).