[Scenario Bundle] Allow users to add sectors without choosing predefined sector devision

Description of the issue

If no predefined sector division (SD) is chosen, no sectors are displayed (this has been different some time ago, and maybe has been changed due to my unclear description in issue OpenEnergyPlatform/oeplatform#1524 ). Since users might be unsure, which from the offered SDs their study deals with, they should be given the oppurtunity to at least annotate with the more general sector definitions from the ontology: agriculture, forestry and land use sector energy demand sector energy transformation sector industry sector waste and wastewater sector (plus maybe even the subsectors of energy deman sector in a subsequent hirarchy). This might be better than losing possible entries at this point.

Factsheet

Study

Field

S7: Sector divisions
S8: Sectors

Ideas of solution

1. Add alternative answer "None of the above"
2. If answer is chosen, display sector classes from the ontology

agriculture, forestry and land use sector
energy demand sector ((plus maybe:))

• building sector
• commercial sector
• heating and cooling sector
• household sector
• transport sector

energy transformation sector
industry sector
waste and wastewater sector