* task now takes an optional keyword `group`
* added result_group() and fetch_group()
* added group column to Success admin
* group column in searchable
* added `name` field to Schedules
* Scheduled tasks take schedule name as group
Migrations on existing data would fail because of the old names being longer than the uuid. Keeping the field length at 100 will keep it compatible with existing data.
Removed the squashed migrations cause this will cause dependency problems on existing installations. Every new migration will list the squashed migrations as a dependency. Not a problem for new installations, but will crash on exisitng ones.