Adds code to allow for color change from hovering the mouse.  Getting ready to support opening a more detailed graph on click.
Adds code to allow for color change from hovering the mouse.  Getting ready to support opening a more detailed graph on click.

DougFirErickson/lcm,andybarry/lcm,adeschamps/lcm,andybarry/lcm,adeschamps/lcm,DougFirErickson/lcm,kyonifer/lcm,lcm-proj/lcm,adeschamps/lcm,vooon/lcm-vala,andybarry/lcm,andybarry/lcm,DougFirErickson/lcm,DougFirErickson/lcm,bluesquall/lcm,kyonifer/lcm,lcm-proj/lcm,bluesquall/lcm,vooon/lcm-vala,DougFirErickson/lcm,andybarry/lcm,vooon/lcm-vala,adeschamps/lcm,kyonifer/lcm,kyonifer/lcm,andybarry/lcm,bluesquall/lcm,andybarry/lcm,kyonifer/lcm,vooon/lcm-vala,DougFirErickson/lcm,bluesquall/lcm,DougFirErickson/lcm,adeschamps/lcm,kyonifer/lcm,adeschamps/lcm,DougFirErickson/lcm,lcm-proj/lcm,vooon/lcm-vala,lcm-proj/lcm,andybarry/lcm,bluesquall/lcm,lcm-proj/lcm,adeschamps/lcm,kyonifer/lcm,bluesquall/lcm,lcm-proj/lcm,bluesquall/lcm,vooon/lcm-vala,vooon/lcm-vala,vooon/lcm-vala,adeschamps/lcm,lcm-proj/lcm,lcm-proj/lcm