moved most SpecialPage from app to setup

also changed two wg to wld
and built some special page credits

p2 corrections accdg to Kip's recommendation

also moved jobs from app to OWJobs.php,
removed some unnecessary globals and
removed some unnecessary require_once specially Wikidata.php
& WikiDataGlobal.php since it is already "required" since App.php.
Change-Id: I9e26aea619db73096f50066ac49c08f2c9abeea3