terms without rdfs:comment

[VladimirAlexiev]

PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
select * {
    ?x rdfs:label ?label
    filter not exists {?x rdfs:comment ?comment}
}

The following 8 terms have label but no comment:

	x	label
1	nc: DayOfWeekKind.holiday	"holiday" @en
2	nc: EnergyDemandKind.consumption	"consumption" @en
3	nc: EnergyDemandKind.export	"export" @en
4	nc: EnergyDemandKind.import	"import" @en
5	nc: EnergyDemandKind.production	"production" @en
6	nc: EnergyDemandKind.storage	"storage" @en
7	nc: TapChangerControl.TapChangerControlSchedule	"TapChangerControlSchedule" @en
8	nc: TapChangerControlSchedule.TapChangerControl	"TapChangerControl" @en

[griddigit-ci]

Yes, here we have issues that will require UML changes
issues 1) to 6) add description in the extensions and update SIS and SHS profiles
issues 7) and 8) in SHS profile