Change selKey to selectedItem so edit value dialog renders correctly
Change selKey to selectedItem so edit value dialog renders correctly

review: da39a3ee5e6b4b0d3255bfef95601890afd80709@maffoo

labrad/scalabrad-web,labrad/scalabrad-web,labrad/scalabrad-web,labrad/scalabrad-web,labrad/scalabrad-web