Added builder for inbox and forwardings.
Added task2sqltask testing helper.
Reworked the inbox tabs.
Disable containing_subdossier column for the IssuedInboxTasks.
Pep8.
Fixed tab adjustment upgradestep.
Added new state refused to the forwarding workflow.
Added refuse-task form, including storing a copy functionality.
Marked refused forwarding as pendet in tasklistings.
Reworked the AssignTaskForm and add tests to make it easier to customize.
Pep8 cleanup.
Add additional test to TaskAssignForm tests.
Update translations.
Made TaskAssignForm better customizable.
Added assign inbox form for the reassign-refused transition.
Update translations.
fixed import.
Added closed-forwardings tab used on yearfolders.
Removed no longer used import.
Reworked inbox overview.