XMLTest now extends BaseTest
Adds fragmentMarshaller bean
Adds generic findByid to resource repository and service
Adds tests for findAllIdsByUsagePoint to resource repository and service
Removes files that were moved to Common
Removes unnecessary qualification
selfLink on IdentifiedObject now uses LinkType
Adds ExportService
SubscriptionRESTController now uses ExportService
Fixes steps to use correct usage point id
Merge branch 'big-data-export'