FLWSrvr should return error, not bool

[langston-barrett]

The description states:

If the boolean value is false there was a problem. If the *ServerStats slice is empty or nil, then the error happened before we started to obtain 'srvr' values. Otherwise, one of the servers had an issue and the "Error" value in the struct should be inspected to determine which server had the issue.

The golang convention is to use some kind of error type, not a bool. This should especially happen when the there are no srvr values to extract an error from.

Maybe a custom error type that holds a slice of affected servers?