parts of the item search popup. Clicking on an item now closes the the window when using it Editor (did not work since a very long
time). Also the FlatBrowsePane introducted some time ago did not work when the ItemSearchPopup was used from the Xinha editor.
git-svn-id: https://svn.libreccm.org/ccm/trunk@2871 8810af33-2d31-482b-a856-94f89814c4df