* Added converters to all relevant node implementations
* Added new annotation objects with their own factory
Change-Id: I9870d6d5eac45083929d74d2e58917d0939ca917
* Moved implementation of getting and updating a DOM wrapper to ve.ce.BranchNode
* Updated ve.ce.BranchNode tests
* Renamed ve.NodeFactory.createNode to ve.NodeFactory.create
* Added ve.NodeFactory.lookup which gets the constructor of a type
* Added attribute pass-through to ve.dm.BranchNodeStub
Change-Id: I8f5b7d3d3ae616cc5f39828b24b655163d782ae5