Created  hvchannelwindow class that will handle the setup of the hvgrid
Created widget for hvchannels
Updated mainwindow to use hvchannelwindow widget
Created and implemented lvchannelwindow
Updated machine control to use signals for notifications, updated channel widgets to use signals for events
Updated graph to use slots
Moved UpdateValues to machinecontrol
Updated constructor for machinecontrol
Updated constructor of timegraph class