No redirect with impact skin
If you choose impact skin for the portal there is a redirection issue. To reproduce :
- use impact as portal skin.
- go to a protected url. YOu will be redirected to the authentication form.
- verify that the url you have asked is well b64 encoded as "url" parameter.
- fill the form with login/pass.
- You will not be redirect to wanted url but on menu.
Proposed patch attached.