types: simplify some simple 'if... else...' expressions
test_coalition_additive_weights: fix cateogry inversion
test_coalition_additive_weights: display coalition in a sorted manner

We use the profile vector to sort the coalitions...
ws: test.sh: send output in a file and only show result in shell
ws: MRSortMIP: merge lambda.xml and solver.xml in params.xml

The optinal lambda threshold and solver are read from params.xml
from now.