Separates the MMP into two phases:
1). Creation of the ModelMetadata, discovery of properties and attributes
(reflection) is part of the MMP
2). Lookup of details based on attributes is now part of another phase,
and has its results cached.
Users can now implements and register an IFooMetadataProvider to customize
a single aspect of metadata (see how data annotations does it).
- #EngineeringDay
- VS does not yet format auto-properties nicely; reverted what it did
Also revert changes under
- test/Microsoft.AspNet.Mvc.Razor.Host.Test/TestFiles
- clean up "the the" in XML comments
- simplify refactoring VS did when I renamed `GetHtmlHelperForViewData()`
- fix existing issue in `HtmlHelperCheckboxTest.CheckBoxReplacesUnderscoresInHtmlAttributesWithDashes()`
(was using a `HtmlHelper<ViewDataDictionary<TestModel>>`)
- helps w/ #453 since `Html.BeginForm()` wasn't previously tested
- provide a `DefaultTemplatesUtilities.GetHtmlHelper()` overload with an
`IHtmlGenerator` parameter
- update `DefaultTemplateUtilities` to use `DefaultHttpContext`
- stop using a mock for this purpose; provides a non-`null` `Request`
nit:
- `DefaultTemplatesUtilities.GetHtmlHelperForViewData()` -> `...GetHtmlHelper()`
for consistency with other overloads