Demos: Added CasperJS functionnal tests
Filterable: fix preventDefault not working

Closes gh-7154
Fixes gh-7153
Build: Update hashchange to include script tag escape

Grab the version of jquery.hashchange.js that includes
https://github.com/gseguin/jquery-hashchange/pull/1 which will cause the built
library to be inline-able.

Fixes gh-7300