[FIX] Fixing output of mason2 app tests.
Merge pull request #140 from holtgrewe/hotfix/mason2_expected_output

[FIX] Fixing output of mason2 app tests.
[INTERNAL] Supressing all warnings from Python binary in valgrind.

They were triggered where Python wrappers did result comparisons.
Merge pull request #142 from holtgrewe/hotfix/python_suppressions

[INTERNAL] Supressing all warnings from Python binary in valgrind.