ChoiceOfReceiver(US#9)

Implemented ReceiverActivationDialog, IReceiverActivationDialogViewModel, ReceiverActivationDialogViewModel, MainWindow, MainViewModel, ViewModelLocator

New dialog ReceiverActivationDialog for receiver activation and corresponding menu in MainWindow created.
Merge pull request #8 from GraphalyzerPro/ChoiceOfReceiverNew(US#11)

ChoiceOfReceiver(US#9)