Feature: add activate and deactivate events to Ember.Route

[machty]

Would be nice if mixins that add behavior to Ember.Route didn't have to use _super all over the place.

pushToNavigation: function() {
   ... blahdeblah
}.on('activate')

[rwjblue]

Agreed. This would definitely be preferable.

[gpoitch]

throw in willTransition too

[machty]

nothing to kill or die for
and willTransition too

[wagenet]

@machty ping.

[salzhrani]

Sound super, Thank you @machty

[pangratz]

I've created a PR for firing the activate and deactivate events, additional to the current hooks on Ember.Route.

Regarding the willTransition event, as discussed above: I think this is handled by the willLeave action proposed in #4760.