Rename meteor classes to meteorite classes and update types

Updated remoteoperations.xml to add GetMeteoriteClasses operation.
Renamed methods and updated return types in RemoteOperationsManagerMaterials.cs and InfoSampleDataViewModel.cs.
Changed GenerateAppInstallerFile property in INAF.Apps.Uwp.SLabDataManager.csproj to False.
Incremented app version in Package.appxmanifest to 1.0.50.0.
Renamed enum value in Enums.cs.
Updated InfoUserControl.xaml.cs to handle new method and return type.