onpopstate doesn't include query string when e.state = null

[cj-idoctours]

When e.state = null (like when clicking on a link that is the same as the current location except with a hash), the query parameters were not added to page.show()

This problem occurs on line 998 on page.js

Problem code:
998 page.show(loc.pathname + loc.hash, undefined, undefined, false);

Fix:
998 page.show(location.pathname + location.search + location.hash, undefined, undefined, false);

[matthewp]

This is a bit of a tough one to test.