Fix IE default redirect url (#1108)
Fix IE default redirect url (#1108)

Applying changes from https://github.com/auth0/lock/pull/1373/files

Co-authored-by: Steve Hobbs <72228fc6760022ee330e8c4e54f1de6aed66f52d@auth0.com>
auth0/auth0.js,auth0/auth0.js,auth0/auth0.js