Reworked the inbox tabs.
Added closed-forwardings tab used on yearfolders.
Pep8.
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.
Removed no longer used import.
Fixed profile id in upgradestep 2602.
Refactored refusing functionality.
Update translations.