Moves all login logic from the activator to the openToxLoginOutListener

It also:
* Makes OpenToxs authorization service an account property.
* Adds a new login method to openToxs manager: login(String user, String pass, String authService)
* Adds a new method for geting the authorization service from the opentox manager
* Adds a new metod the reset the authorization service
* Adds javaDoc to the openToxLoginOutListener-class
* Adds a logger to the openToxLoginOutListener-class
* Makes the openToxLoginOutListener-class a singleton

And will probably solve bug 3069 as well...