…olve FxCop issues.
… version by default.
… the redundant LINQ query from UsersController.cs - that was probably a bad merge? And possibly fix a bug where the package download count shown in Profile was that of the package and not the package registration.
…eference bug that would occur if you have no latest package for that packageRegistration, i.e. you unlist all versions of that package.
… were an attack by the customer. Fixes #1614.