Add database field 'active' for 'taskgroup'. Reset it before contest/task...

Add database field 'active' for 'taskgroup'. Reset it before contest/task updating, so taskgroups can be removed from contests again. Fixes #12.
5 jobs for master in 30 minutes and 40 seconds (queued for 14 minutes and 16 seconds)
Status Name Job ID Coverage
  Test
passed clippy #1397

00:06:52

passed test #1396

00:06:47

 
  Build
passed build #1399

00:07:39

passed documentation #1398

00:07:30

 
  Testdeploy
failed testdeploy #1400

00:01:50

 
Name Stage Failure
failed
testdeploy Testdeploy
$ ssh-add <(echo "$SSH_PRIVATE_KEY" | base64 -d)
Identity added: /dev/fd/63 (/dev/fd/63)
$ mkdir -p ~/.ssh
$ [[ -f /.dockerenv ]] && echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config
$ ssh medald@jim.test.bwinf.de "sudo /bin/systemctl stop medal && sudo /bin/systemctl stop medalp"
Warning: Permanently added 'jim.test.bwinf.de,88.99.14.37' (ECDSA) to the list of known hosts.
$ scp target/release/medal medald@jim.test.bwinf.de:medal/
scp: medal//medal: Text file busy
ERROR: Job failed: exit code 1