include validator's voting power in /status

Refs #581

types/validator_set.go

@@ -100,9 +100,8 @@ func (valSet *ValidatorSet) GetByAddress(address []byte) (index int, val *Valida
 	})
 	if idx < len(valSet.Validators) && bytes.Equal(valSet.Validators[idx].Address, address) {
 		return idx, valSet.Validators[idx].Copy()
-	} else {
-		return -1, nil
 	}
+	return -1, nil
 }
 
 // GetByIndex returns the validator's address and validator itself by index.