Undo/Redo Buttons

Please add the ability to undo/redo any action. Ctrl+Z (undo) only works while editing lyrics, but it doesn't work when making other changes such as slide order, template settings, etc.

In general, undo/redo functionality that applies to all application actions is very helpful when you accidentally make a change that you didn't intend to make or if you later change your mind and want to redo the change.

With no Save button in Worship Extreme, the undo/redo functionality becomes even more critical.

Very much needed feature!!!!