auger_spec_map viewer functional and aesthetic updates
auger_spec_map viewer functional and aesthetic updates

Functional:
docks viewing mean images and image stacks
input channel and type of drift correction
show mean spectrum only
moveable, resizeable scale bar

Aesthetic:
white background
detector line colors
axis labels
stack ImageView docks on startup
ScopeFoundry/FoundryDataBrowser,ScopeFoundry/FoundryDataBrowser