Enable RiakControl.LoadingRoute for Ember 1.0 using Promises for all states

This is essentially a combination of commits [54e5f5d](https://github.com/basho/riak_control/commit/54e5f5d81726f7946da90e7c71eeb1808f5ea746) and [23912e4](https://github.com/basho/riak_control/commit/23912e47823e0a5027b8339a5de3ac8243b48c7a) that recently had the develop branch merged in.

- jQuery upgrade
- Use ajax Promises to enable the loadingRoute for each state.