[TemplateScript] migrate all regex menu framework users to TemplateScript

[Pathoschild]

The [regex menu framework](User:Pathoschild/Scripts/Regex menu framework) is an ancient script that was merged into TemplateScript years ago. It hasn't been maintained in a very long time, so it's not compatible with recent MediaWiki changes and doesn't follow current JavaScript conventions.

Migrate all users to TemplateScript.

To do

• [ ] Eliminate m:User:Pathoschild/Scripts/Regex_menu_framework.js
• [ ] Eliminate m:User:Pathoschild/Scripts/Regex_menu_framework/experimental.js
• [ ] Eliminate custom translated versions (TemplateScript now supports localisation)