Edited Unassigned: Respect model metadata and model validation in html helper controls [1237]

Hi,
It would be nice if HtmlHelper control respect ModelMetadata and ModelValidation. I think about adding:

* maxlength attribute in TextBox or TextArea if property has StringLengthAttribute
* title attribute if ModelMetadata has Description
* placeholder attribute if ModelMetadata has Watermark
* any others/ability to extend that