Cleaning up Shallow_Water a bit. Removed the adaptivity, as we don't expect it to work on the sphere anyway. Removed the Helmholtz test as it was cluttering things. Tidied options retrieval into a subroutine.
Cleaning up Shallow_Water a bit. Removed the adaptivity, as we don't
expect it to work on the sphere anyway. Removed the Helmholtz test as it was
cluttering things. Tidied options retrieval into a subroutine.


FluidityProject/multifluids,FluidityProject/multifluids,FluidityProject/multifluids,FluidityProject/multifluids