[test] fix req default value handling in CubicWebTC.view (closes #2544376)
It's no more than the standard ``if rset`` vs. ``if rset is None`` error.
/*
* cubicweb js mock for unit tests
* This module defines variables and functions used in quite a few places
* in cw js framework that can't be used or guessed without a real CW server
*/
var pageid = 'my-page-id';
function _(message) {
return message;
}