Restore CDModulePreferencesV3 to track the history of module prefrences.
This way, excluded endpoints may be saved globally to Core Data as a
starting point. Then in Profile.userInfo we only save the relevant
exclusions for the current configuration.
The .excludedEndpoints relationship is therefore moved out of
CDProviderPreferencesV3.
Further refactoring:
- ModuleViewParameters now includes a ModulePreferences observable that
module views can observe
- Tunnel doesn't need access to PreferencesManager anymore (exclusions
are in Profile.userInfo)
Davide