Propsed ScriptTagHelper

- ScriptTagHelper added that changes src attribute to minified file name if it exists
- Changed the TagHelperSample.Web to support self-host (k web)
- Added Tag Helper projects to Mvc.NoFun.sln
- #1524
I'm not convinced of that. It seems intrusive for some reason. It just feels wrong to me. We can discuss more but it's not that big a deal.