Merge branch 'master' into '51-nix-stale-schedules'

# Conflicts:
#   whats-open/settings/production.py
3 jobs for 51-nix-stale-schedules in 1 minute and 22 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Test
passed #3068
whats-open-py2.7

00:01:17

passed #3069
whats-open-py3.5

00:01:22

passed #3070
whats-open-py3.6

00:01:20