Using HyperSpec when loading a page via visit #398

If you visit a page (rather than use mount) you don't get the HyperSpec extra stuff (like TimeCop integration, ability to use before_mount, insert_html etc.

Furthermore, when you call on_client the @hyper_spec_mounted flag is not set, and so the page will get reloaded.

You can work around the second part by doing a page.instance_variable_set("@hyper_spec_mounted", true) after the visit.

But this should all be nicely integrated, possibly some ERB helpers that could be used in test mode when loading the layout?