Change submission period #2
Description
There are two possible ways of doing this:
- By allowing the user to edit every task's submission period
- By allowing only to edit the general setting.
The submission period is the time subtracted from 24h that allows the user to submit a task a little bit before than a biological day. Currently is 2h, which means that the user can submit every 22. In some use cases, it may be useful to be more strict.