Enabled nuget package restore
Upgrade to Caliburn 1.4.1
Upgrade fluent assertions and xunit

Conflicts:
	source/StockTicker.Test/Authentication/ChoosePasswordViewModelTest.cs
	source/StockTicker.Test/Authentication/ChooseUserNameViewModelTest.cs
Upgrade mspec
Upgrade Extended Wpf Toolkit
Upgrade localization extension

Conflicts:
	source/StockTicker/Authentication/AuthenticationView.xaml
	source/StockTicker/Authentication/ChoosePasswordView.xaml
	source/StockTicker/Authentication/ChooseUserNameView.xaml
Upgrade to Caliburn.Micro 1.5.1