Add more utility functions
Add more utility functions

- getServerAssetIdByName(s string) uint64
  translates from server names to asset IDs

- checkRestyResponse(r *resty.Response)
  checks the HTTP response status code, a 404 here for
  example means that an invalid api endpoint was
  called

- decodeProtoResultServerFromResponse(resp *resty.Response) *somaproto.ProtoResultServer
  takes a resty HTTP response and returns the JSON response body
  decoded into a somaproto.ProtoResultServer struct

1and1/soma