firefox-legacy-1.16.4.26

Change

• Make the button look consistent in Pale Moon on Windows
• Fix regression regarding filter used count per list
• Backport several improvements and fixes from the upstream (thanks to @hawkeye116477)
  • Add no scripting feature
  • Warn when navigating away from pane with unsaved changes
  • Select existing "Advanced settings" page if any
  • Update links for docs
  • Fix problems with search input readability
  • Visually emphasize directive syntax (!#if/!#endif) in list viewer/editor
  • Allow to view list content from blocked-document page
  • Fix filterlists and my filters wrapping
  • Make use of CodeMirror in "Advanced settings" page
• Update urlhaus-filter URL

Note: The release notes are created/maintained by @JustOff.