- #1999
- may have reordered the precedence comments as I double-checked the implementations
- `CheckBox()` and `RadioButton()` were examples of such updates
nits:
- use SSL in documentation links
- simplify mentions of format strings
- remove a few phrases that didn't say much and duplicated `<remarks>`
- standardize on the `Type` extension method; less verbiage
- `ModelMetadata` had a redundant `IsAssignableFrom()` call
- `ModelBindingHelper.ValidateBindingContext()` over-engineered and used just once
- do useful bit inline in `KeyValuePairModelBinder` but now a silent "does not apply" case