JCloud ProfitBricks provider implementation

Hi! This implements most of ProfitBrick's API. I look forward for your comments, suggestions, and revisions.
Is the goal in binding error handlers here is to throw "more specific" type of exceptions (as shown <a href="https://github.com/jclouds/jclouds-labs/blob/master/cloudsigma2/src/main/java/org/jclouds/cloudsigma2/handlers/CloudSigmaErrorHandler.java#L46-L91">here</a> and <a href="https://github.com/jclouds/jclouds-labs/blob/master/digitalocean/src/main/java/org/jclouds/digitalocean/handlers/DigitalOceanErrorHandler.java#L38-L58">here</a>) instead of a generic <code>org.jclouds.http.HttpResponseException?</code>