Time to ditch myTkSimpleDialog

[csatt]

The myTkSimpleDialog.py module was copied from the TkSimpleDialog.py module a long time ago and modified to put the OK and Cancel buttons in the correct places depending on the platform. It was an easy way to create dialogs that request strings and numbers. But the instances feature exposed another modification that is needed: these dialogs are not associated with the window from which they were launched; they are always associated with the main window. This not only makes the dialog pop up in an unexpected place but also brings the main window to the front and puts the focus on it. On Windows, if the main window is minimized, the dialog comes up minimized too, which is more than confusing. Furthermore, this module generates a large number of pylint errors and warnings.

The myTkSimpleDialog.py module should be retired. The IV_Swinger2_gui.py module already has a base Dialog class. It will be pretty simple to create the needed dialogs and functions to replace those from myTkSimpleDialog.py and to fix the issue mentioned above.