Uninstalling should delete and/or rename the AppData folders

[qwahzi]

Is your feature request related to a problem? Please describe. I've run into multiple situations where the wallet would not open and/or sync (usually after an upgrade), so I then decide to reinstall. However, running the Windows uninstaller is not enough - you also have to manually delete or rename the Nano/RaiBlocks folders in AppData before reinstalling (otherwise the issue persists). After doing that and installing/syncing from scratch, everything works correctly.

Describe the solution you'd like

• When uninstalling, have a checkbox to remove all saved preference files/configs

• When installing, have a checkbox to use existing preference files/configs or to start from scratch

[zhyatt]

The NanoWalletCompany is no longer supporting this app. See https://nanowalletcompany.com/ for details. Closing.