`List_UWPApps` cannot be accessed by the window `UWPApps`

[ferguscollins]

a0638ed generated the list List_UWPApps in MainWindow to act as the list to describe the checkboxes rendered in the window UWPApps, which cannot access the list.

List_UWPApps does contain the correct data to render the checkboxes as currently described in UWPApps.xaml which can be verified by writing the same code in MainWindow.xaml and loading default.ini in /configuration/, so the solution will likely entail either figuring out how to access the list by some external reference or by moving the declaration of, and possibly generation of the data in the list to a public class.