RTL fixes for ul, ol, legend elements in the lms _reset.scss

lms/static/sass/base/_reset.scss

@@ -29,7 +29,7 @@ sub, sup { font-size: 75%; line-height: 0; position: relative; vertical-align: b
 sup { top: -0.5em; }
 sub { bottom: -0.25em; }
 
-ul, ol { margin: 1em 0; padding: 0 0 0 40px; }
+ul, ol { @include padding(0, 0, 0, 40px); margin: 1em 0; }
 dd { margin: 0 0 0 40px; }
 nav ul, nav ol { list-style: none; list-style-image: none; margin: 0; padding: 0; }