Releases for W3C Validator

First Drupal 10 compatible release !

W3C Validator is now compatible with Drupal 9.

Also includes :
- update HTMLValidator dependencie, run `composer update`
- code refactoring and styling standard

This new release now uses an external library to analyse the page.
You should use composer to install the module via: composer require drupal/w3c_validator

To update from a previous version:
- Delete the whole w3c_validator folder
- Run composer require drupal/w3c_validator
- Eventually run /core/rebuild.php if the module stands in a different location then it previously was
- Run update.php
- Enjoy and start correcting your HTML ^^ !

Fixes and refactoring includes:
- Issue #2771179: Remove deprecated usage of db_select, db_insert and db_delete from codebase by jalpesh, Dom.: Remove deprecated usage of db_select, db_insert and db_delete from codebase.
- Issue #2771267 by Dom.: Fix deprecated method usage
- Issue #2755291 by Dom., davidstinemetze: English Grammar Fixes

Development branch for 8.x-1.x version.

• Feature: Possibility to chose between tho validation methods, using the W3C validator script or using the Tidy library (requires php tidy extension).
• Feature: Possibility to validate authenticated pages, i.e.: unpublished nodes, private views. Only available when using the Tidy library method.
• Task: default validator endpoint is now the official w3c validator url so you can start using the module right away without installing any script. A notice about the conveniency of installing your own instance of the validator is given in the system status report.

Changes since 1.1:

• Bug: Warnings were not stored and reported correctly
• Check that the module is configured before anyone can use it
• Wrong filename of one include file. Rename it.
• Added translation template.
• Better display of results with warnings.