Reuse JsonReader from the typesafe client by the dynamic client

[jmartisk]

• This only addresses the usage of @Name for now. @DateFormat etc need to be added to the common code IIUC.
• This removes the JSON-B dependency from the client
• While this makes some dynamic client bits depend on stuff from packages named typesafe, I'd perhaps prefer not reorganizing the packages now (like moving that stuff into something called "common"), that will be done with Rebase typesafe client on the dynamic client #725

But most importantly:

• I find it a bit odd that the client code does not make use of the @Name annotation when parsing a returned object, so when client and server share the same model class, and that class contains a @Name("b") String a, then the client has to request a:b (an alias) to properly retrieve and parse the field. @t1 says it's by design, I'm not quite sure. See DynamicClientTest#testRenamedField. @phillip-kruger WDYT?

[phillip-kruger]

Yea it should be the same as the server. Although we can keep support for a:b in the client.

[phillip-kruger]

LGTM