Only fire selectionChanged when selection has actually changed
Only fire selectionChanged when selection has actually changed

desktop/desktop,say25/desktop,j-f1/forked-desktop,artivilla/desktop,gengjiawen/desktop,hjobrien/desktop,j-f1/forked-desktop,BugTesterTest/desktops,artivilla/desktop,hjobrien/desktop,hjobrien/desktop,kactus-io/kactus,shiftkey/desktop,artivilla/desktop,kactus-io/kactus,say25/desktop,BugTesterTest/desktops,say25/desktop,shiftkey/desktop,say25/desktop,shiftkey/desktop,j-f1/forked-desktop,kactus-io/kactus,desktop/desktop,shiftkey/desktop,BugTesterTest/desktops,BugTesterTest/desktops,gengjiawen/desktop,j-f1/forked-desktop,hjobrien/desktop,kactus-io/kactus,desktop/desktop,gengjiawen/desktop,gengjiawen/desktop,artivilla/desktop,desktop/desktop