Adopt SAREF and SSN modelling for properties

The current modelling of the SAREF4BLDG ontology for devices properties is based on creating specific object or datatype properties. This modelling is previous to the addition of the property saref:relatesToProperty that moves SAREF closer to SSN modelling of properties.

As part of the BIMERR project the SAREF4BLDG and SAREF ontologies have been reused, among others, to build the BIMERR building ontology modifying the modelling of properties aligning them to the new SAREF version and SSN. Such modelling decisions could be applied in a new version of SAREF4BLDG. Attached an snapshot of the specific part of the ontology related to properties.