- copy over legacy `Editor*()` extensions and default editor templates
- get working in the new world
- usual `var`, `String` -> `string`, `internal` -> `public`, namespaces, ...
- longest overloads into `IHtmlHelper[<TModel>]` and implementation classes
- clean up `ViewContext.ViewData` -> `ViewData`, trailing whitespace, long lines
- remove `MultilineTextTemplate()` since `TextArea()` doesn't exist yet
- remove `ColorInputTemplate()` since `Color` type doesn't exist
- use `html.Label()`, not `LabelExtensions.LabelHelper()`: equivalent helper
is protected. only downside is potential `ModelMetadata` re-discovery.
- rename `HtmlInputTemplateHelper()` -> `GenerateTextBox()`
- copy over `Html5DateRenderingMode` and `html.Html5DateRenderingMode` property
- and get them working in new world
- hook the default editor templates up
- use `Editor()`, `EditorFor()`, `EditorForModel()` in MVC sample
- add an on-disk editor template to MVC sample