added isAuthenticated middleware

[fcaps]

closes #479
Redirecting after login is now possible, but i opted to not directly add this to every route.

[Brutus5000]

Uh we got a merge conflict.

but i opted to not directly add this to every route

If I understand the correctly, if you don't define anything you get back to the original url. Is that right? In that case, where else would we need to add this to routes?

[fcaps]

If I understand the correctly, if you don't define anything you get back to the original url. Is that right? In that case, where else would we need to add this to routes?

yeah, originUrl is the "current" path.
already added the middleware in PR #485 to the other routes.