obviousAlexC/PenPlus: bugfixes and patches

[David-Orangemoon]

List of changes

/*
  * -- Added -- *
  * Extension settings
  * Added a patch for mods with different or "Unique" urls Suggested on discord
  * This little patch notes section

  ? -- Changed -- ?
  ? Added a fix for render textures not removing themselves politely.
  ? General bug fixes
  ? Fixed CSS bugs

  ! -- Removed -- !
  ! Herobrine?
*/