== Op-ify member data handling ==

* New operations: OpAddMember, OpRemoveMember,
OpUpdateMember.
* Member data is now handled in a memberDataManager
instance inside OdtDocument.
* Any operations must be executed only if a member
is present within this model.
* All polling code for member data has been removed;
colors, names, and images now instantly update
whenever a member data operation is executed.
* Added relevant entries to the OT Matrix.
Remove terrible hack for setting the dc:creator
field's text in an annotation; now that we
have first-class access to member data,
we can set this value directly within
OpAddAnnotation.
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.