fix get datastreams response tag to match fcrepo 3x
remove @Consumes annotation from PUT /objects/{pid} to match POST
Cleaned unused imports
Changed FedoraObject.getObjectDSSize() to filter to counting only datastreams, not other nodes
Revert "Changed FedoraObject.getObjectDSSize() to filter to counting only datastreams, not other nodes"

This reverts commit ba66ff12b93229e79ffa26034eb090dff5c1c6c2.
Better change to FedoraObject.getDSSize(), also better type-safety in SimpleObserver
metrics-SNAPSHOT removed Reporter interface
some aesthetic fixes to make sonar happier
wire in sitemap endpoint
fix up sitemap namespaces