Title: Allow changing graph number from 1 to "all" when editing PNP graph in report
Level: 1
Component: reporting
Class: fix
Compatible: compat
State: unknown
Version: 1.2.7i1
Date: 1428338979

The problem was that when you edited a report element of type PNP graph and wanted
to change from one specific graph to the list of all graphs of that service you
wouldn't be able to save your change. Creating new elements worked, nevertheless.
