* only local element needs to be bound

* index of the pressure has to equal the one of the main component
* advection law does not need outflow information
* fix some reference solutions

Fluid systems exported phase indices for wetting and nonwetting components. The fluid system
is not the right place to decide about wettability. This introduces wettingPhase() in the spatial
params which returns the index of the phase in the fluidsystem we consider the wetting phase.
This way wettability can change temporally and spatially.
Indices throughout the 2p/2p2c/2pnc nc and mpnc where renamed accordingly.

Dennis Gläser authored 6 years ago and Timo Koch committed 6 years ago

Contributions by Timo Koch, Kilian Weishaupt.

* better distinguish between total mass balance and component mass balances

This commit affects all properties and member variables

This commit affects all properties and member variables

* Use PrimaryVariables instead of InitialValues, SourceValues, ...

* original tests contains a flaw concerning the time management,
  this should be addressed some time

* Does not pass yet