Added fail delay column in the adhock task table on the admin page,
Added a new column for a delete action for the adhoc tasks on and
Wrote delete_adhoctask.php for delete functionality of adhoc tasks.
Wrote behat test for the delete functionality. Also there was a
logical error in the previous code where it was checking if the task
is due or not and it was just showing Never or ASAP instead of
actual time so fixed that as well.
waleedhassan