Make firefox default web link application, added new potential background

users/caperren/caperren.nix

@@ -92,6 +92,9 @@ in
       enable = true;
       defaultApplications = {
         "application/pdf" = [ "okularApplication_pdf.desktop" ];
+        "x-scheme-handler/http" = [ "firefox.desktop" ];
+        "x-scheme-handler/https" = [ "firefox.desktop" ];
+        "text/html" = [ "firefox.desktop" ];
       };
     };