[testlib] rework request building in init_authentication
The previous code was building a full authenticated request and tried to undo
the authentication afterward. The new code just create a bare Request with no
authenticated session linked yet.
This is much closer of what the actual authentication process does.
$(document).ready(function() {
$('a.rhythm').click(function (event){
$('div#pageContent').toggleClass('rhythm_bg');
$('div#page').toggleClass('rhythm_bg');
event.preventDefault();
});
});