Fix main navigation and footer links also make text not italic

lms/static/sass/course/base/_base.scss

@@ -2,6 +2,7 @@ body {
   min-width: 980px;
   min-height: 100%;
   background: url(../images/bg-texture.png) #d6d6d6;
+  font-style: normal;
 }
 
 body, h1, h2, h3, h4, h5, h6, p, p a:link, p a:visited, a, label {

lms/static/sass/course/layout/_courseware_header.scss

@@ -40,9 +40,9 @@ nav.course-material {
         }
 
         &.active {
-          // background: rgba(0, 0, 0, .2);
+          background-color: #333;
+          background-color: rgba(0, 0, 0, 0);
           @include linear-gradient(top, rgba(0, 0, 0, .4), rgba(0, 0, 0, .25));
-          background-color: transparent;
           @include box-shadow(0 1px 0 rgba(255, 255, 255, .5), 0 1px 1px rgba(0, 0, 0, .3) inset);
           color: #fff;
           text-shadow: 0 1px 0 rgba(0, 0, 0, .4);

lms/static/sass/shared/_footer.scss

@@ -110,6 +110,7 @@ footer {
           padding: 0;
 
           a {
+            @include inline-block;
             opacity: 0.3;
             @include transition(all, 0.1s, linear);