ENH: refs #0313. Fixing a failing test in ItemModelTest.
ENH: refs #0313. Fixing a failing test in ItemModelTest.

We were failing because we were assuming the wrong ordering of items
in the databaseDataset/default.xml.

jcfr/Midas,jcfr/Midas,mgrauer/qibench,jcfr/Midas,mgrauer/qibench,mgrauer/qibench,jcfr/Midas,mgrauer/qibench,jcfr/Midas,mgrauer/qibench,mgrauer/qibench,jcfr/Midas,mgrauer/qibench