add_new action module

Copies an existing PIE item into a user's new items list (which is created if it
doesn't exist)

action routine

Input: CGI data from UIG (which contains userid and itemid)
Output: CGI data is returned unmodified

PDL

Get user's default item (page) from userdata table
See if default item has child of new_list type from item table
If not defined new_list
    Call get_new_itemid and get_posno routines to get itemid and positionno for
    new_list
    Insert new_list entry into item table
    Put information into readgroups and editgroups tables
Call get_new_itemid and get_posno routines to get itemid and positionno for
child of new_item list that will be copy of item
Insert copy of item data with new itemid and positionno into item table
Put information into readgroups and editgroups tables
Return