Remove weekly queue.
Remove weekly queue.

We'll use the daily queue ('low') because it runs every 24 hours. We'll check
for the day of the week, to actually send the emails. Only on Sunday.

Scifabric/pybossa,geotagx/pybossa,PyBossa/pybossa,Scifabric/pybossa,PyBossa/pybossa,geotagx/pybossa