Update node and node-apn dependencies in order to make apns work again.

The node-apn v1.3.0 was broken if no conf.feedback was set, this was fixed in upstream v1.3.1. Also since v1.3.0 node-apn seems to use EventEmitter.listenerCount which is not available on node 0.8.x, updating to node 0.10.x helped. Version 0.10.4 used, since it ran all tests correctly on a local machine, some more testing might be necessary.