Remove traces of unix timestamp
Revert renaming reminder table column
Fix staticcheck
Remove unused table call
Add migration for renaming reminders table
Fix issues with using TimeStamp
Fix lint
Updated all created / updated fields to use TimeStamps
Add comments
Convert all created / updated fields to datetime
Add time util package
Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/api/pulls/130
