edithelp action module

Called from PIE customise screen, edits the details about a page

action routine

Input: CGI data from UIG (which contains information about help - orderby, new
orderby, topic, text)
Output: Prints http location to return user to edit page

PDL

Delete link to page from people's lh lists (it will be recreated if they can
still view it) by updating viewitem table
Recursively go through children of page - set parents list
While parents list nonempty
    Set parent to first in list
    Delete existing list of groups that can read parent from readgroups table
    Insert new values from readgroups CGI parameter into readgroups table
    Delete existing list of groups that can edit parent from editgroups table
    Insert new values from editgroups CGI parameter into editgroups table
    Update item table so that children of parent are expanded (restores arrows
    on resources) 
    Get children of parent from item table
    Foreach child
    	Add child to parents list
If title CGI parameter != ""
    Update title of page in item table
    Update title of page in viewitem table (for every user)
Update page description in item table
Update page title in viewitem table (for every user)
Want to ignore response and go directly back to customise page (because want to
rerun customise action to configure customise forms)
Print http location command with appropriate URL
Exit 0