Function to delete enqueued adhoc order should be added

Current Situation

The order queue of a job is only a list of enqueued orders without any function.

Desired Behavior

It should be possible to delete one or more adhoc orders of the orders queue.

• The delete function should be callable corresponding to other bulk operations such as "Start Task now".
• This function is only available if the user has the "order.delete" permission

If the user has sufficient permissions then

• A first column with checkboxes should be added for each row with an adhoc order.
• The header field of this column contains a checkbox to select or unselect all adhoc orders.
• If an adhoc order is selected then a Delete button should be displayed.
• The Delete button opens a dialog for auditlog reasons if necessary
• The Delete button calls the API ./orders/delete