Added missing parameter value
Updated revision and info section as show_V_flow has been removed.

This is for issue #19
Removed fixme.

This is for issue #19. It has been tested that this section is not the cause of events.
Made volume final and removed design flow direction.

This is for issue #19. Making the volume final removes it from the parameter dialog window.
Merge branch 'issue18_homotopy' into issue19_cleanUpCode
Made volume final and removed design flow direction.

This is for issue #19. Corrected wrong instantiation that used Buildings instead of Annex60 library.
Added missing parameter value.

This is for issue #19.
Added missing revision note.

This is for issue #19.
Revised media.

This is for issue #19.
Removed import Modelica.Constants statement.
Added missing extends Modelica.Icons.Function statement.
Removed computation in h_pTX and in T_phX of properties that are not
used.
Revised media.

This is for issue #19.
Used different medium so that model passes the model check without
error.
Removed import Modelica.Constants

This is for issue #19.
Changed the mode of the file to 100644.

This is for issue #19.
Changed function calls to T_phX and h_pTX as they are not implemented in PartialMedium.

This is for issue #19.
Removed non-used function HeatCapacityOfWater

This is for issue #19.
This function is not implemented in the MSL and not used in the library.
Reimplemented ConstantPropertyLiquidWater.

This is for #19.
The implementation is completely revised since the compressibility has
been removed.
This simplified the implementation considerably.
We also set u=h in the base properties.
Reformated comment.

This is for #19.
Completely revised PerfectGases package.

This is for #19.
Functions that are not declared in the base class are now made
protected. This is to avoid that models use them, and then become
incompatible with other media models that do not implement these
functions.
The order of functions has been changed to be alphabetically.
MoistAirUnsaturated now contains all implementations, as this is the
medium that is typically used.
MoistAir extends from MoistAirUnsaturated, and only implements what is
different.
Comments have been updated throughout the packages.
Moved IdealGases.SimpleAir to PerfectGases.DryAir

This is for #19.
The reason for moving this medium is to have a consistent naming. Now,
we have MoistAir(Unsaturated) and DryAir, as opposed to
MoistAir(Unsaturated) and SimpleAir.
The medium IdealGases.SimpleAir is also a perfect gas, and all
Media.PerfectGases are ideal gases. Hence, it makes sense to put them
in the same package.
Moved PerfectGases to IdealGases

This is for #19.
Changed T_phX to temperature_phX and h_pTX to specificEnthalpy_pTX

This is for #19.
The reason is that T_phX and h_pTX are not defined in the base class.
The proper name is temperature_phX and specificEnthalpy_pTX.