Closes #1511

This fixes indentation, documentation, and removes unused protobuf
files.

This commit finally ties `helm install` together with the Kubernetes
client library to make an end-to-end trip.

There were several small fixes to go on both client and server side,
along with some changes to proto to support better error reporting.

The alpine chart has been updated to exhibit how the new Helm works.

	1. remove preliminary hapi protocol buffer definitions
	2. modify hapi Makefile
	3. update hapi protobuf model in _proto/hapi/{chart,release,services}
	4. generate protobuf src to pkg/proto/hapi/{chart,release,services}