mail about virus test results

create automatic email job that would be periodically send to all smasch users with information about positive virus test results in the past 24 hours

changed milestone to %0.15.0

added Covid-19 label

created merge request !245 (merged) to address this issue

mentioned in merge request !245 (merged)

closed via merge request !245 (merged)

mentioned in commit f2e8c5e5