Merge branch 'SDC-934-discard-mechanism' into 'master'

atdb/taskdatabase/templates/taskdatabase/discarded/page.html

.../taskdatabase/templates/taskdatabase/discarded/tasks.html

...base/templates/taskdatabase/failures/confirm_discard.html

atdb/taskdatabase/templates/taskdatabase/failures/tasks.html

atdb/taskdatabase/templates/taskdatabase/index.html

...tabase/templates/taskdatabase/quality/filter_buttons.html

...atabase/templates/taskdatabase/query/confirm_discard.html

.../templates/taskdatabase/query/set_multi_status_panel.html

atdb/taskdatabase/templates/taskdatabase/tasks.html

...skdatabase/templates/taskdatabase/tasks/details_card.html

atdb/taskdatabase/templates/taskdatabase/tasks_headers.html

...se/templates/taskdatabase/validation/confirm_discard.html

...skdatabase/templates/taskdatabase/validation/headers.html

...taskdatabase/templates/taskdatabase/validation/tasks.html

atdb/taskdatabase/urls.py

atdb/taskdatabase/views.py