Issue9

Moved the setting of forced auth and passive to constructor of the LoginHandler rather than per request. Updated unit tests
I'm confused. So we want to always do:
* setSupportsForceAuthentication(true);
* setSupportsPassive(true);
Those are not configurable.

When sending to CAS, we check the request to build whether or not to send the renew or gateway params? (not what I did here).