- copy from legacy MVC
- get `ListBox[For]()` methods in correct places and working
- also usual stuff: `var`, `[NotNull]`, remove `IDictionary<,>` overloads
- `ListBoxHelper()` -> `GenerateListBox`
- already had all the bits needed in `GenerateSelect()`
- special-case `null` or empty `name` in GenerateSelect()
- ensure `ArgumentException` has correct parameter name
- lower-level problem affected `CheckBox()` as well
- use `ListBox()` and `ListBoxFor()` in MVC sample
- use `ListBox()` in an editor template
- copy over legacy MVC's `SelectExtensions`, `SelectListItem` and `SelectListGroup`
- plus expected `SelectList` and `MultiSelectList`
- fixup select HTML helpers to meet WebFx standards and work in new world
- usual stuff: `[NotNull]`, `var`, `String` -> `string`, long lines, ...
- remove `IDictionary<string, object> htmlAttributes` overloads
- move longest extension method overloads into correct classes / interfaces
- add `ViewDataEvaluator.Eval()` overload for an `object` container
- rename lower-level helpers to make purposes more obvious
- nit: move Raw() methods up from bottom of HtmlHelper.cs
- use `DropDownList[For]()` in MVC sample
- add `CheckBox[For]()`, `Hidden[For]()`, `Password[For]()`, and
`RadioButton[For]()`
- also make `FormatValue()` visible to users, as it is in legacy MVC
- and spread the boxes out a bit in MyView 😺
Showcased a lot of the core pieces of Display in the sample. Some pieces are still missing such as DataType handling. The infrastructure is there to handle it in the TemplateRenderer but the model metadata providers do not construct the metadata with the data types.
- demonstrate `ModelMetadata` is available in a view
Also
- simplify `View()` overloads in `Controller`, pending #110 decisions
- make `Model` in `RazorView<T>` readonly