Updated nuget packages.
- MVC packages
- Miscellanous stuff
- Owin packages and test packages (NSubstitute, FluentAssertions) not updated yet.
Updated all packages for integration tests project.
Updated to Katana (Microsoft.Owin) 3.0.0.
Updated FluentAssertions and NSubstitute packages.
Updated all nuget packages to latest versions.
- Fixes #140.