OSIS-796 Fixed tests
OSIS-796 Fixed tests

Added person to group faculty manager. In case of test for cancel of
proposal

uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/osis,uclouvain/osis_louvain,uclouvain/osis_louvain,uclouvain/OSIS-Louvain,uclouvain/osis_louvain