add links to return values from API methods

add meter links to resource return values.
add resource self link.

Change-Id: I0c9802b57ebbb9aa852acd7fdec1c49df8883a64
Fixes: bug1048728
Remove "extras" again

It snuck back in here 82ad299a5fe893bffbd264f86965ed7a6c4181cf

Change-Id: I2562408591a4c3a4d6029869e1c1d48a6a433850
Merge "add links to return values from API methods"
Merge "Remove "extras" again"