Test for XML documentation errors
- extend the "test" target in our build to use new k-xml-docs-test.shade command

Example output with one syntax error and one invalid reference:
```
info: Target xml-docs-test
warn: Invalid documentation syntax in src\Microsoft.AspNet.Mvc.Core\bin\debug\net45\Microsoft.AspNet.Mvc.Core.xml
warn:   3170: <!-- Badly formed XML comment ignored for member "T:Microsoft.AspNet.Mvc.Rendering.HtmlHelper" -->
warn:   3203: If the object is already an <see cref="!:IDictionaries&lt;string, object&gt;"/> instance, then it is
```
ProducesAttribute +
Adding Functional Tests

Conflicts:
	src/Microsoft.AspNet.Mvc.Core/Formatters/OutputFormatter.cs
	src/Microsoft.AspNet.Mvc.Core/Resources.resx
	src/Microsoft.AspNet.Mvc.HeaderValueAbstractions/project.json
	test/Microsoft.AspNet.Mvc.FunctionalTests/project.json

Adding Resources + tests

Conflicts:
	src/Microsoft.AspNet.Mvc.Core/Properties/Resources.Designer.cs
	src/Microsoft.AspNet.Mvc.Core/Resources.resx

Adding produces content Attribute

Conflicts:
	src/Microsoft.AspNet.Mvc.Core/Microsoft.AspNet.Mvc.Core.kproj

Conflicts:
	src/Microsoft.AspNet.Mvc.Core/Microsoft.AspNet.Mvc.Core.kproj
	test/Microsoft.AspNet.Mvc.Core.Test/Microsoft.AspNet.Mvc.Core.Test.kproj
Make RazorPage.IUrlHelper a non-public property
* This allows for injection of the property in cshtml files wthout running
in to compilation errors
* Make IUrlHelper a default injected service

Fixes #816
Modify RazorView to be instantiated via TypeActivator

Partial fix for #889
Fixing doc comment in RazorView
Made razor compilation more robust
- Support other kinds of references when compiling razor views
- Cache application references since they can't change throughout the lifetime
of the running application
Added comment about the source of the Covert method
Wrap a long URI
Introducing Activator for ViewComponents.
Adding a functional test for anti forgery.
Introducing ByteArrayModelBinder.
-Checks for ModelType before processing.
-Ignores quotes in ByteArrayModelBinder.
-Unit,functional Tests.
-ModelStateError is set when Covert.FromBase64String(value) throws.
Adding doc comments for ModelBindingContext

Fixes #865
[Issue #730] Attribute Routing: Flesh out attributes - Part 1

1. Added a new AttributeRouteInfo class to store all the information for
   actions that are attribute routed.

2. Added a new ReflectedAttributeRouteModel class to store all the information
   related to attribute routes in the ReflectedApplicationModel.

3. Refactored ReflectedControllerModel and ReflectedActionModel to use ReflectedAttributeRouteModel
   instead of just the attribute route template.

4. Refactored ReflectedActionDescriptorProvider to use AttributeRouteInfo and ReflectedAttributeRouteModel
   instead of just the route template.

5. Added a CombineReflectedAttributeRouteModel method in ReflectedAttributeRouteModel that handles
   combining two ReflectedAttributeRouteModel instances.

6. Removed the AttributeRouteTemplate class and moved the methods for combining attribute routes to the
   ReflectedAttributeRouteModel class.

7. Added unit tests for ReflectedActionModel and  ReflectedControllerModel that
   cover the usage of AttributeRouteInfo.

8. Added unit tests for CombineReflectedAttributeRouteModel.
[Issue #730] Attribute Routing: Flesh out attributes - Part 2

1. Unsealed the Http*Attributes so that they can be extended and customized.
2. Added the same constructors as HttpGet to the rest of the Http*Attributes.
3. Added unit tests to validate the implementations for the IActionHttpMethodProvider.
4. Added functional tests to cover extra attribute routing scenarios like a test for an
   action with an HttpDeleteAttribute on it and action with AcceptVerbsAttribute and an
   action with a custom HttpMergeAttribute implemented.