Changes to Example to make it a little more user friendly
Merge branch 'DistrictHeating' of https://github.com/GlennReynders/IDEAS into DistrictHeating

Conflicts:
	IDEAS/DistrictHeating/Example.mo
	IDEAS/DistrictHeating/Substations/Control/SupplyTControl.mo
	IDEAS/DistrictHeating/Substations/SingleHeatExchanger.mo