Take in account more RDF properties

[jmvanel]

Currently the map only uses these RDF properties:

• geo:long ,
• geo:lat ,
• rdfs:label
  for each URI .

There is a need to take in account also these RDF properties (let's call them displayed annotations) :

• rdf:type for RDF classes
• dcterms:subject for connecting the URI to a SKOS thesaurus
• dcterms:publisher for indicating the provenance

How to show these properties ?
It is expected that RDF classes, SKOS concepts, and publishers have a foaf:img, foaf:image, or foaf:logo ,
which will then be used for markers.

In the case where there is no such images, a different color for each combination should be computed.
For the case where a given URI has several displayed annotations, a choice widget will allow to choose globally the displayed annotation among the three above.