RR: added some comments.
RR: Fixed zoom messages.
Added styles for zoom messages.
Made layout of footer more robust.
Added style for plot labels
Changed to select plot labels based on class instreaad of element type.
RR:  more comments.
RR: fixed display of zoom out message.
The zoomOut button is now grouped and a bug that removed the text label from the zoomOut button is now fixed.
Missing project sectors bug now fixed. Some projects were identical by name so the unique key now incorporates the node id.
RR: Added mouseover behavior.
Fixed async problem.
Fixed problem in which the zoom out message was being set to invisible.
RR: fixing issue around updating of mouseover when zoomed in to different levels.