Feat/accept header

• Added contributors comment to every java file
• Added accept header for all SOAP requests
• Resolved two problems for CDA generation:
  • occurenceDate is used with time now
  • resolved problem with value set updates for immunization scheme and dose (https://termpub.gesundheit.gv.at:443/TermBrowser/gui/main/main.zul?loadType=ValueSet&loadName=eImpf_Impfschema_VS, https://termpub.gesundheit.gv.at:443/TermBrowser/gui/main/main.zul?loadType=ValueSet&loadName=eImpf_Impfdosis_VS)