Fix dev14 crash + temporary? .gitignore
Update FileSystem package version.
Re-updated System.IO.FileSystem version.
Update file headers
Merge branch 'dev' of github.com:aspnet/WebFx into dev
Correcting WebFx failure on CI machines
- a single test is failing under CoreCLR only
- using the resource-related properties of a `ValidationAttribute` in
  precisely one place – the failing test.
- in .NET the DataAnnotations assembly is somehow able to get access to
  `internal` resources
- that doesn’t work under CoreCLR
- short-term fix is to add an `[InternalsVisibleTo]` in the test
  assembly, giving DataAnnotations access to the resource

Will also file a bug in the DataAnnotations repo
Revert "Correcting WebFx failure on CI machines"
- previous attempt didn't work

This reverts commit a626896b80db5f3ac1433354232abb9134294048.
TEMPORARILY disable ClientRulesWithCompareAttribute_ErrorMessageUsesOverride
- test failing under CoreCLR
- leave it running under .NET 4.5
Oops wrong test
Renaming Exception Filter methods

These were accidentally the same names as the action filter methods.
Oopsies. Name taken from MVC and appended Async for the async version
because that's how we roll.
Require cshtml ending for full path view names.

If a view represents a full path and does not end in .cshtml the FindView and FindPartialView methods will throw.

#206
Add tests to ensure cshtml ending for full path view names.

#206
Addressed code review comments.
Switch to use IServiceCollection
Fix for moving extension methods to IServiceCollection
Move Microsoft.AspNet.RequestContainer dependency from MVC sample to MVC
- :bug: fix; fixes #346
Add User helper to controllers and views.

#277
Updating build scripts
Updating build scripts
Fixed sample to not override User property.

#277