that are used for the different process in the staggered scheme

local matrices and vector for the staggered scheme

Cleanup output

For some reasons construction from an initializer list containing
{std::set, bool} does not work on MSVC and gcc-4.9 resulting in
ambigious function calls.

Also move a single piece checking the output type being
VTK.

[MPI/PETSc] Enable rank output.

[Output] Cleanup of the output logic

Fixed Qt GML writer to guarantee decimal output for coordinates

Closes #2045.

Check header for standalone compilation

- works only on *nix
- is tested on Jenkins in Docker-Conan-Debug job