W3C Markup Validation Service for CSR pages

A tool for validating the currently rendered html with the Markup Validation Service provided by the W3C.

It provides the ability to extract the HTML of the current page and populate values into Validate by Direct Input in the Markup Validation Service (https://validator.w3.org/#validate_by_input ).

This makes it easier to validate compliance with markup standards for pages generated by Client Site Rendering (CSR).