Added better formating of time title in graph tooltip
Added better formating of time title in graph tooltip

dwright134/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter,dwright134/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter,shmick/HeaterMeter,kdakers80/HeaterMeter,shmick/HeaterMeter,shmick/HeaterMeter,kdakers80/HeaterMeter,kdakers80/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter,dwright134/HeaterMeter,CapnBry/HeaterMeter,kdakers80/HeaterMeter,dwright134/HeaterMeter,kdakers80/HeaterMeter,kdakers80/HeaterMeter,shmick/HeaterMeter,dwright134/HeaterMeter,dwright134/HeaterMeter,shmick/HeaterMeter,shmick/HeaterMeter,shmick/HeaterMeter