Changes related to MemberData w.r.t Annotations:

* Remove old artifacts from AnnotationViewManager.
* Make OpUpdateMember updated all dc:creator elements
that have been labelled with an editinfo:memberid attribute.
* Add tests for member data operations in conjunction with
annotations.
* Add a member "Alice" by default in OperationTests.js,
so that annotations in tests can also have an author name.