refactor 'Add item' link on scheduling_polls#edit. The new-item-element "child id" number is generated by normal-order number instead of `new Date`.
refactor 'Add item' link on scheduling_polls#edit.
The new-item-element "child id" number is generated by normal-order number instead of `new Date`.

cat-in-136/redmine_scheduling_poll,cat-in-136/redmine_scheduling_poll