Remove JettyClientHandler.

It's a bit more than I'd like to chew right now.
Clean up DropwizardResourceConfig.
Simplify JerseyEnvironment.

This brings the API a bit more in line with Jersey 2.
Added ConnectorFactory docs.
Improve HttpsConnectorFactory.

Renamed keyStore => keyStorePath and trustStore => trustStorePath.

Added keyStoreProvider, trustStoreProvider, allowRenegotiation, and endpointIdentificationAlgorithm.