auto detect template subscriptions?

[christophmayrhofer]

The fast render docs say that automatic subscription detection works for:
Subscriptions defined in the route's waitOn function.
Subscriptions defined in the route controller's waitOn function.
Subscriptions defined in the route controller's subscriptions method.

However, Kadira academy states that it is not advisable to define subscriptions on the route level, but rather define them in the templates. So this seems to contradict the fast-render implementation

[LewisW]

See #115