This patch reduces dependencies and makes usage of linear solvers more flexible, i.e. for two problems with different typetag

* Linear solvers don't need type tag anymore, in fact they don't need any template params
* the preconditioner block size is now provided for the solve method (see e.g. staggered newton controller)
* the amg has a convencience alias using a TypeTag but is "independent" through indirection via the traits

Make Newtoncontroller independent of TypeTag

See merge request !740

In case of global caching, the grid variables have to be updated
as otherwise the old solution is written to disk.

[doc] fix documentation in fluidsystems

See merge request !720

Bernd Flemisch authored 7 years ago and Timo Koch committed 7 years ago

Manual cherry-pick of a part of 993d4801.

* [test][richards] Fix solver include
  (Used to compile before due to indirect include over newtoncontroller.

Improve assembly more

See merge request !737

Also fixes related issue hiding the ElementResidualVector alias in the incompressible residual.
This was needed to make this work.

Feature/improve fvassembler

See merge request !734

* set phaseNcp in method evalFluxSource as this one should be called
  in all possible cases for assembly (implicit/explicit/numeric/analytic)

The off-diagonal elements of the global system matrix are not allocated
and should not be accessed. A Todo has been added since it has to be
clarified what happens when e.g. solution-dependent porosities are used.
In this case, off-diagonal entries should be assembled!

The previous implementation failed for mpfa on surface/unstructured grids.

the stencil types could not be different for the different iv types
anyway. We now use the stencil type specified in the unique DualGridNodalIndexSet.

This is needed for compatibility with the new FvAssemblerBase class.

This requires additional info to be supplied by the FluxStencils. For example,
this commit further introduces the property MaxNumBranchesPerScvf with
which the size for these reserved vectors is parameterized for network/surface
grids.

[moduleutil] Copy files from last release

See merge request !735