interface: remove local_max_particles parameter from fcs_tune and fcs_run
interface: clean up
interface: fix last commit
Generated 1D testcases and added generation script.
Removed grid size 5.
Merge branch 'master' into p3m-refactor

Conflicts:
	lib/p3m/src/tune.cpp
	lib/p3m/tune.c
	src/fcs_p3m.c
Put communication into class.
Major refactoring: classified error estimates.