Revert "configure Flask-Login to remember logged in users across subdomains"
Revert "configure Flask-Login to remember logged in users across subdomains"

This reverts commit 45005e5a3dce00a601808a6cf422da0e1b29cc9b.

More complex than expected, need to deal with multiple sessions in the
different subdomains now.

DOAJ/doaj,DOAJ/doaj,DOAJ/doaj,DOAJ/doaj