Harmonization of identifier properties

[jetgeo]

Different parts of the model apply different structures for identifiers:

• FeatureType Dataset.datasetId: CharacterString
• FeatureType FeedbackInformation.datasetIdentifier: CharacterString
• FeatureType RoadFeature.id: DataType RoadFeatureId
• FeatureType RoadFeatureEvent.RoadFeatureId: DataType RoadFeatureId
• DataType RoadFeatureId.id: CharacterString, RoadFeature.providerId: CharacterString
• FeatureType NetworkElement.id: DataType Identifier
• DataType Identifier.localId: CharacterString, Identifier.namespace: CharacterString

Suggested change:

• Replace DataType ReadFeatureId with DataType Identifier
• Use DataType Identifier as data type for Dataset.datasetId and FeedbackInformation.datasetIdentifier

What we gain:

• One global data type for identifiers with localId and namespace
• Add namespace to identifiers for Dataset and FeedbackInformation

[jetgeo]

Implemented in the editorial EA project and in the OWL ontology. Ref https://github.com/ERTICO-TN-ITS/TN-ITS-Open/commit/85bfe524c2e3ce99a628a45a26fdafd27e0161fa.