Add OpenHub query

dotfiles/saturnin/www.conf

     deb     = https://packages.debian.org/search?keywords=%s
     g       = http://www.google.com/search?q=%s
     ma      = http://www.mapy.cz/?q=%s
+    oh      = https://www.openhub.net/p?q=%s
     sc      = http://slovnik.cz/bin/mld.fpl?dictdir=encz.cz&lines=90&vcb=%s
     se      = http://slovnik.cz/bin/mld.fpl?dictdir=encz.en&lines=90&vcb=%s
     sd      = http://slovnik.cz/bin/mld.fpl?dictdir=gecz.ge&lines=90&vcb=%s