Always deliver default View to annotator process method

Currently the CAS view delivered to an annotator's process method depends on two things: if the annotator declares sofa capabilities, the base CAS view is delivered; else the default view is delivered.

Based on a recent mailing list discussion, always delivering the default view would be simpler and more intuitive.

This change in behavior should not break any existing annotator code as the base CAS view delivered to view aware annotators essentially supports only the getView method, which will continue to work.