added ability to do sign up
allow parsing of errors
allow response implementer to decide what is a success status
initial split of ServiceApi and AccountApi
removed unused code, i.e. removed loop that adds transations to a paramenter map that never gets used
added small javadoc
added constructors to force providing from host, which is required for the Account Management API
initial commit to support finding applications
prevent empty bodies to cause null pointers, i.e. some httpresponse have no body, like a 404