started updating steppermotor gui to share common interface with tracking gui.
added label widget
Merge branch 'master' of https://github.com/creilly/sitzlabexpcontrol
added method to probe current key in dictcombobox
label widget now accepts widget or layout
fixed key error in config file
mostly finished with tracking software
tweaks to steppermotor and tracking
refresh button to update positions after manual change of stepper motors
led widget now reads abs file path
minor changes to dictComboBox and voltmeter config structure
fixed conflicts in dictComboBox and voltmeter config
modifications by creilly to SmartScan to connect to virtual vm and sm