[Spring] mvc annotation

* mvc:annotation-driven

• registers a DefaultAnnotationHandlerMapping and AnnotationMethodHandlerAdapter.
• @NumberFormat and @DateTimeFormat annotations.
• JSR-303 Bean Validation API support will be detected on classpath and enabled automatically.

* mvc:default-servlet-handler

• allows for mapping the DispatcherServlet to "/" (thus overriding the mapping of the container's default Servlet),
• while still allowing static resource requests to be handled by the container's default Servlet.