fix(toast): replace cancel with hide on hideDelay

[cebor]

This replaces the cancel() with hide() in a toast with the option hideDelay.

What it changes is, that the promise get resolved instead of rejected what makes more sense to me.

[ThomasBurleson]

@cebor - plz update and dependent *.spec.js unit tests so all tests pass.

[cebor]

@ThomasBurleson done!

[ThomasBurleson]

@rschmukler - this changes seems reasonable: hide === close.
As the author of interimElement.js, can you describe the difference [wrt interimElement] between cancel() and hide()).

---

Btw, a promise wrapper is also needed in hide() change is also needed:

function hide(response) {
  var interimElement = stack.shift();
  return $q.when(interimElement && interimElement.remove().then(function() {
    interimElement.deferred.resolve(response);
  }));
}