Merge branch 'easy_shift_presence_validation_with_conditions' into 'dev_cooperatic'

Message when shift begin is missed improvement

See merge request !43
2 jobs from dev_cooperatic in 1 minute 20 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #1464
lint:js

00:20

passed #1465
unit:django

00:59