documents are created from other findocs

  im_invoice_items.item_id to acs_objects

  with nonce for CSP

  if the other lines are empty (no text or no units)

  causes of DynView columns
- Beautified the overdue calculation in the list.tcl
- Added a column for ventum with "Overdue since" with an order_by overdue

- In invoices/view.tcl showing the related customer purchase orders
- Allowing to promote a normal invoice to a timesheet invoice, so that
  the report period is shown

  parsing a XML document with invalid namespaces
- Beautified ns_log debug messages

  deleting all and then creating them from scratch.
  This way we can audit invoice_items, and we can update
  the amount, even if there are dependent objects

  used for redirecting per cost type

  (conf items etc.)