Hydrilla

update Worldcat fix

include missing modified GPL in sources zipfiles

integrate fixes by Jacob K

The original repo of the fixes was:
https://codeberg.org/JacobK/site-fixes

put each fix in a separate directory with its own index.json

This commit also updates the repository to use version 2 of package source schema.

update Google Forms fix

improve some of the fixes and add sample URLs for testing

[google-sheets-fix-display] fix missing semicolons

translate all site fixes to the new Hydrilla format

Fixes in new format are yet to be tested. Things may break.
Alternative site interfaces were removed. This repository is meant exclusively for holding fixes for js-encumbered websites. Jahoti's SParse code shall be put in a separate repository.