KRACOEUS-7550:move summary to submit panel

not sure if putting populateCreditSplits & populateQuestionnaires in the ProposalDevelopmentService is the best place for the methods, any other suggestions are welcome
Looking at this, would it make more sense to put this type of view only logic into the viewhelperservice instead? Or a new service linked to the viewhelperservice? Instead of linking our service layer to the view.