Bug 10799: Limit the SCO user to the SCO module

Bug 10799: Limit the SCO user to the SCO module

The SCO user should only be allowed to access to the SCO module.

This patch make the session ends if the user tries to access another
page after the SCO module.

Test plan:
0/ Configure the SCO module correctly
1/ Go on the sco main page (sco/sco-main.pl)
2/ Try to go somewhere else: you should not be logged in

Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>