updated reference results for heat pumps
added electrical power output to heat pump reference results
updated reference results for models with a relative error smaller than 5e-4. One model had a larger error but this is caused by the changed implementation of a temperature sensor around zero flow
Renamed unit test PumpWithPipeHeatPort  so its name is not equal to the test in the pump example package.
Added reference result.
updated reference results for PumpWithPipeHeatPorts example
added more reference results for failed simulations of unit tests
fixed some models that accidentally used blocks from Buildings library instead of MSL
Merge pull request #25 from rubenbaetens/master

Updated PartialHydraulicSystem and Meteo on A60
removed SolarCollector model
Merge branch 'Annex60' of github.com:open-ideas/IDEAS into Annex60
DHW implementation according to Annex60 baseclasses
fixed bug in stratifiedinlet
changed outdated comment in stratifiedinlet
changed radiator implementation and added unit test to check nominal power
now using idealSource in Partial3WayValve instead of a pump
all mass is now located in the mixing volume
changed implementations of extending valves
fixed example implementation
changed interpolation type in CombiTable2D of heat pumps to avoid error, see issue 18
accepted new Unit test results due to changed interpolation type in heat pump models
Examples to illustrate the non linearities of a very simple hydraulic circuit.
test with ThreeWayValveMotor.mo
fixed bug in pipes partial that caused pipe mixing volumes to have a default 'prescribedheatflow' parameter = true. This parameter was not propagated to the top. This caused issues when coupling a fixed temperature boundary condition for zero flow. For pumps this parameter is now correctly overridden and set to true since pumps use a prescribedheatflow.