Compatibility for custom articlepath
Compatibility for custom articlepath

If a custom articlepath is set (e.g. $wgScript?title=$1) subpages won't work,
so use a fallback solution with form data.

Change-Id: I3db51d537a45ecf35280bdde8351bbb4ba15fd6d

tamcap/mediawiki-extensions-GoogleLogin,wikimedia/mediawiki-extensions-GoogleLogin,tamcap/mediawiki-extensions-GoogleLogin,wikimedia/mediawiki-extensions-GoogleLogin