Update to JavaEE 8 and JsonB instead directly use of Jaxen databind

[reinhapa]

Use of JSR 367 (http://json-b.net/) Json binding instead of Jackson Binding directly

[Gr33nbl00d]

I have seen jsondecoder/encoder. Another idea would be to release the decoder/encoder as own dependency / module. We use an own google protocollbuffer encoder/decoder, this feature is quite usefull and it could be cool to have different decoders/encoders ready to use for different protocols.