#763 Could not use "configure this list" once a stop watch has been added to the list, which is a pitty because such attributes are not aimed at being displayed in lists!

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@2848 a333f486-631f-4898-b8df-5754b55c2be0
ModelFactory: needed / define_if_not_exists were not equivalent

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@2850 a333f486-631f-4898-b8df-5754b55c2be0