Handle valueHasComment in Search

[tobiasschweizer]

Additionally to valueHasString and rdfs:label, valueHasComment was added to the full text index for the triplestore(s).

Do we have to adapt the fulltext search templates?

-> jena/fuseki:

@if(triplestore == "embedded-jena-tdb" || triplestore == "fuseki") {
            ?matchingSubject knora-base:valueHasString ?literal .
            #?matchingSubject ?p ?literal .
            #FILTER(?p = knora-base:valueHasString || ?matchingProperty = rdfs:label)
        }

the literal could also be a comment!