- in .kproj files, let VS mark a couple more test projects as such
- remove duplicate `ModelExpression` class
- not necessary now that test project references MVC Core project
- follow up to 9fded74
- avoid `resources` warning in project.json files
Creates a new package 'Microsoft.AspNet.Mvc.Abstractions' which defines
APIs and contracts for core concepts and extensibility points in MVC.
Includes:
- ModelBinding
- Validation
- Model State
- Model Metadata
- Action Descriptors
- IActionResult
- Filters
- IActionConstraint