JERSEY-1840: Determining the MediaType of Response from available writers does not work correctly.

 - using message body workers to select the method to be invoked
 - using message body writers to determine the media type of the response
   - see MethodSelectorRouter + MessageBodyFactory

Change-Id: I6f344acbc5643fcd25fa6df5eddf89dc2ff6989e
JERSEY-1763: Create AutoDiscoverable for MOXy JSON module.

 - created autodiscoverable class
 - updated MoxyJsonConfig to support more (un)marshaller features
 - updated ConfigurableMoxyJsonProvider to read (un)marshaller properties from Configuration
 - other JSON providers are disabling MOXY JSON provider when configured
 - updated tests

Change-Id: I17de2ad59dc079d374da337041b06cada6f99511