solve common breadcrumbs through inheritance

AKSubmission/templates/AKSubmission/ak_detail.html

AKSubmission/templates/AKSubmission/ak_edit.html

AKSubmission/templates/AKSubmission/ak_list.html

...mission/templates/AKSubmission/akowner_create_update.html

AKSubmission/templates/AKSubmission/akslot_add_update.html

AKSubmission/templates/AKSubmission/akslot_delete.html

AKSubmission/templates/AKSubmission/base_submission.html

...ission/templates/AKSubmission/submission_breadcrumbs.html

AKSubmission/templates/AKSubmission/submission_overview.html

AKSubmission/templates/AKSubmission/submit_new.html

AKSubmission/templates/AKSubmission/submit_new_wish.html