Additional changes include:
* Re-wrote the monolithic Controller into separate controller classes that have a more narrow focus.
* Implemented common functionality as a `HandlerMethodArgumentResolver` rather than as a helper method in a controller class.
* Re-implemented JSONP functionality as an HttpMessageConverter rather than inline within a controller class.
* Updated to Jackson 2 for all JSON handling.
* By relying on spring-data-commons, spring-data-rest now handles all supported Repository types: JPA, MongoDB, and GemFire.
Added support for MongoDB and GemFire repositories by relying on spring-data-commons to provide the metadata rather than maintaining internal metadata information that is store-specific.
Replaced Spock spec tests with JMock unit and integration tests. Started integrating Jetty 8 into the testing so MVC testing can be done against a live server.
There were some issues with how results were being displayed in searches versus entity lists. This code changes the way all results are displayed by offereing several options for output. The default is to inline the entity in the response and page the results (defaults to 20). If the UA sends an `Accept` header of `application/x-spring-data-compact+json` or `text/uri-list`, however, SD REST will output a compact list of only links and will not inline the entities.
The method of output was completely rewritten to use HttpMessageConverters exclusively. Views and the subsequent ContentNegotiatingViewResolver machinery have been elimintated. This should make it easier to embed inside an existing Spring MVC application. This is also easily extendable so the user can plug in their own set of HttpMessageConverters for any output format they like (JAXB, Atom/XML, etc...).
Also added was JSONPE support. By setting the `jsonpParamName` property on the `RepositoryRestConfiguration` customization class, the user can change the default JSONP param name of `callback`. There's also a `jsonpOnErrParamName` property on that configuration (defaults to `null`) that will allow you to capture errors using JSONP. Normally this would not be possible using script element injection, but the REST controller changes the status code to 200 and pass your javascript function the actual response code and wraps the error as the second parameter.
