Error messages should be better

[struan]

The error messages that get fed back from the open311 adapter to the scripts calling it are very brief and don't seem to include the details, only the error code. We should include details of the error.

E.g. for the Salesforce one if the credentials have expired it only returns request failed: 500 Internal Server Error which does not help to diagnose the problem.

[dracos]

I think this is up to the integration what it dies with - the SalesForce integration only outputs the status line unless the content JSON is an array whose first element contains errorCode, in which case it uses that. Perhaps it could include the full content, whatever it may be, or add a logger->error line if it's an error, instead of the logger->debug one always.