Fix alembic revision after merge master
Fix alembic revision after merge master

PyBossa/pybossa,Scifabric/pybossa,OpenNewsLabs/pybossa,OpenNewsLabs/pybossa,jean/pybossa,geotagx/pybossa,jean/pybossa,PyBossa/pybossa,Scifabric/pybossa,geotagx/pybossa