[JCLOUDS-702] JCloud ProfitBricks provider implementation

Hi! This implements most of ProfitBrick's API. I look forward for your comments, suggestions, and revisions.
Do you really need this class? Can't you use the [Fallbacks. FalseOnNotFoundOr404](https://github.com/jclouds/jclouds/blob/master/core/src/main/java/org/jclouds/Fallbacks.java#L63) one?