give a value the Modulation_internal to avoid the error when avoidEvents = false + add scaling factor to the internal mass of HP and to its m_flow_nominal. This is necessary to linearly scale the pressure losses with the scaling factor.
correct unit of riseTime in PartialHeatPump.mo, remove avoidEvents from example HeatPump_BrineWater.mo and update example HeatPump_Events.mo
remove the '''translate''' from unittest of Boilers and heat pump and update unit test of HeatPump_BrineWater.mos
Merge pull request #160 from open-ideas/issue78_scalingHeatPump

correct scaling of heat pump and error caused by avoidEvent.