saving and loading battery system works, write modal results for batterysystem (total/average of all batteries / battery strings)

update electric motor form to use two voltage levels, adapt input data, json reader, json writer for electric motor, adapt testcases to make it compile

new property for exempted technology for exempted vehicles
adding schema for exempted primary bus (input, MRF, VIF)
implementing reading and simulating exempted primary bus
restructuring files for XML reports
removed monitoring report

renamed IEngineFuelDelcarationInputData to IEngineFuelDeclarationInputData