basic menu working for point clouds with callback
adding qt gui package.  This will run in a separate node and receive requests over ros.  Unsure if this is the way to go but it is a start
moved qt stuff into qtgui package
gui node displaying popups
gui for identifying point clouds working
adjustments to gui
service call to get user input working
renaming interface works.  left click to display name, right click to rename
small bug fixes in UI