cmake: little tweaks on example run targets
examples: scalar: some code cleanup
Merge branch 'development' into feature/cleanup-scalar

Signed-off-by: Torbjörn Klatt <t.klatt@fz-juelich.de>

Conflicts:
	examples/scalar/scalar_sweeper.hpp
scalar: some further cleanup
tests: examples: scalar: rewamped to be parameterized

now using GTest parameterized test cases to generate separate test cases
for each number of nodes in range
Merge pull request #63 from torbjoernk/feature/cleanup-scalar

Very nice.