Revert "remove obsolete payment conditions tabs on invoice"

This reverts commit 15aaafbf738c2b69f2ca13d06534891b3a2ea0e4.
Reason: To be consistent with packing list and order until
the new way of handling payment conditions is implemented.
erp5_item: Change listbox in Item_getTrackingList to sort by date and display time in the date column

In this way is easier to follow and check where is the item