Livesync: Do not fail on contribution deletion
Livesync: Do not fail on contribution deletion

ThiefMaster/indico-plugins,indico/indico-plugins,ThiefMaster/indico-plugins,indico/indico-plugins,indico/indico-plugins,ThiefMaster/indico-plugins,ThiefMaster/indico-plugins,indico/indico-plugins