[fix] change calculation of molardensity back to as it was on 2.12 as this changes the result extremely

and remove it from fluidsystem test

It was only used in the fluidsystem-test.

* Adjust old macro test to only use existing macros
* Depracate the header containing the macros (they should be replaced soon)

Clues when changing to new property system
* NEW_PROP_TAG is now a definition and can only be there once just like NEW_TYPE_TAG
  - if you're not using macros you can simply use forward declarations of properties whereever needed
  - for the most properties in dumux the definition is in the header common/properties.hh which can just be included
* The order of precedence in INHERITS_FROM is reverse than in the previous implementation
  - if the macro is used the order is flipped
  - if you replace the macro you also have to flip the order manually

* makes calls to NEW_PROP_TAG unique which will be required by the new property system

* was forgotten in recent renaming of tests
* restart test failed because it was not forced to be run after the "regular" test

Lincoln Sherpa authored 6 years ago and Kilian Weishaupt committed 6 years ago

* rename test

Bernd Flemisch authored 6 years ago and Kilian Weishaupt committed 6 years ago

Implement decision made in !1137:
- 1p gas: `gas`
- 1p liquid: `liq`
- 2p gas/liquid: `gas` and `liq`
- 2p liquid/liquid: `aq` and `napl`
- 3p: `gas`, `aq` and `napl`
- solid: `s`

Add `IsAqueous` to components to detect if a component is aqueous or not.
Adapt reference solutions.
Adjust `primaryVariableName` only where necessary to make the tests pass.
Will be treated in general in !1212.