This only works with a special feature branch in which the iterative coupling does not work

Updated code to current version on my laptop. Need to cleanup up code. It has a lot of debugging output.

Good news: Partitioned results no looke very similar to monolithic result after Kilian has changed the boundary conditions in the monolithic case

Added functions to write pressure and velocity from solvers directly to csv

Added functions to write pressure and velocity from solvers directly to csv

Change coupling to:
pm receives pressure and communicates velocity

WIP