burn: cms gui quick on terminal only

[laszewsk]

• check if this is a terminal only and print nice Console.error
  return ""
  cms gui quick

gui quick

ERROR: executing command 'gui quick'
======================================================================
no display name and no $DISPLAY environment variable
no display name and no $DISPLAY environment variable
Traceback (most recent call last):
  File "/home/pi/cm/cloudmesh-cmd5/cloudmesh/shell/shell.py", line 1083, in main
    stop = cmd.onecmd(command)
  File "/home/pi/cm/cloudmesh-cmd5/cloudmesh/shell/shell.py", line 414, in onecmd
    return func(arg)
  File "/home/pi/cm/cloudmesh-cmd5/cloudmesh/shell/command.py", line 111, in new
    func(instance, args, arguments)
  File "/home/pi/cm/cloudmesh-gui/cloudmesh/gui/command/gui.py", line 105, in do_gui
    show=arguments.show)
  File "/home/pi/cm/cloudmesh-gui/cloudmesh/gui/Gui.py", line 130, in edit_list
    event, values = window.Read()
  File "/home/pi/ENV3/lib/python3.7/site-packages/PySimpleGUI/PySimpleGUI.py", line 8007, in read
    results = self._read(timeout=timeout, tim