Simplifying InlineConstraints tests

Right now these use a commandline adapter to inject some data into the
tests, but it's really not needed. Instead, these routes use a prefix to
ensure that the scenario under test is isolated.
Avoid NREs in MVC sample
- see e.g. results of `GET ~/Home/Post`
- use parentheses to avoid `?` confusing Razor

nit: remove unused Home/Test.cshtml view
Extend MVC Sample functional test to include all Home views
Touch up tag helper sample
- provide list of users on Index page
 - currently uses only the `<a/>` helper but left `<label/>` and `<input/>` comments
- get date picker working on Create and Edit pages
 - add `[DataType]` annotation
 - use format browsers recognize

nits:
- move "Create New" link to the bottom of `~/Home/Index`
- correct code comment about assigning to a `ViewBag` property
React to aspnet/Razor#210 changes.

- Added the ErrorSink pass through values for our overridden classes.
React to GetDefaultServices/TryAdd changes
Adding support for property level binding using IBinderMetadata and enabling FromXXX attributes to be decorated on properties.
Add schema version to kproj files
matched classnames with filenames
Move MvcOptions to the root folder (reviewed by @pranavkm)
Remove ControllerDescriptor and fix ControllerActionDescriptor to pick the right type for the display name.
Fix a test based on the resolution of #1609

This old test (from WSR) was commented out pending the resolution of
issue #1609.

I've updated the test to track the current semantics.
Adding FromServicesAttribute.
[Fixes #393] [Design] Update ViewComponent result apis to be consistent with Controller

1. Updated ViewComponent to exposes similar properties to the existing ones in controller where
appropiate. We've left out Resolver for being a bad pattern (just inject the dependency on the constructor
or use Context.RequestServices to access it if needed) and Response as although available through the Context
property, it shouldn't be used/modified in a ViewComponent.

2. Updated ViewViewComponentResult to follow a similar pattern as ViewResult where the constructor is
parameterless and elements like ViewEngine are resolved during execution if the user does not set the
associated property on the object.

3. Updated ExecuteAsync in JsonViewComponentResult to remove the unnecessary pragma and async keyword from the
signature and to use Task.FromResult(true) instead.

4. Cleaned up ViewViewComponentResult tests.
Update Project.json to download TagHelpers assembly
Updating Associated Metadata Provider to follow the existing pattern.
Adding Support for TryUpdateModel using include expressions and predicate.