Fixed backward compatibility session code not creating __dirty_remember_me variable.
Fixed backward compatibility session code not creating __dirty_remember_me
variable.

inspirehep/invenio-accounts,inveniosoftware/invenio-accounts,tiborsimko/invenio-accounts,inveniosoftware/invenio-accounts,tiborsimko/invenio-accounts,inspirehep/invenio-accounts,inveniosoftware/invenio-accounts,inspirehep/invenio-accounts,tiborsimko/invenio-accounts