DATAREST-329 - Improved RepositoryRestMvcConfiguration to not eagerly initialize beans.

The bean definition for annotatedHandlerBeanPostProcessor now is a static one so that it doesn't require the config class to be instantiated and populated, which caused the (too) eager initialization of all dependent beans.

Also we now leniently lookup all ResourceProcessor instances available in the context to prevent the lookup during config class preparation.

Ignore Neo4j tests now as they run into OutOfMemoryErrors.