At the moment, clicking on a `Link` component whose `href` attribute is a page that doesn't yet exist will show this: <img width="302" alt="screen shot 2017-03-11 at 16 03 39" src="https://cloud.githubusercontent.com/assets/6170607/23824308/4db5d028-0674-11e7-9d7f-879cf9011f10.png"> When reloading the page, it shows this: <img width="407" alt="screen shot 2017-03-11 at 16 03 47" src="https://cloud.githubusercontent.com/assets/6170607/23824312/585acd9e-0674-11e7-96ec-0a34c1f662da.png"> In my opinion, it should show the 404 error directly (without the user having to reload).