Replace MessageDialogManagerLib calls with native Microsoft.Win32

[vertigra]

The project uses MessageDialogManagerLib to open dialog boxes. This solution does not work with Prism (or requires writing a crutch). It must be replaced with a regular mechanism using IDilalogAware

• Integrate to service
• Change to service for all view
• Common open .py/.xml ISystemDialogService #64
• Inherit OpenFileDialog from Microsoft.Win32
• Common save xml/py dialog using ISystemDialogService
• Update .NET #68
• Use this for browse dialogs.
• Change in UserFoldersSettingsViewModel
• Remove IDialogManagerService ;
• Remove MessageDialogManagerLib to IDilalogAware realization
• The ShowFolderBrowser() in the IDialogManagerService does not work correctly. Instead of the path specified in the InitialPath, the dialog opens from the last saved path #70