removed symbolset, replaced with fontawesome for sock and static pages

cms/static/sass/elements/_sock.scss

@@ -33,8 +33,9 @@
       padding: ($baseline/2) $baseline;
       color: $gray;
 
-      .icon {
+      [class^="icon-"] {
         @include font-size(14);
+        margin-right: ($baseline/4);
       }
 
       &:hover {
@@ -62,10 +63,6 @@
         @extend .t-title4;
       }
 
-      .ss-icon {
-        @extend .t-icon;
-        @extend .icon-inline;
-      }
     }
 
     // shared elements
@@ -98,8 +95,11 @@
             @extend .t-action4;
             display: block;
 
-            .icon {
+            [class^="icon-"] {
               @include font-size(18);
+              vertical-align: middle;
+              margin-right: $baseline/4;
+
             }
 
             &:hover, &:active {

cms/static/sass/views/_static-pages.scss

@@ -10,6 +10,16 @@ body.course.static-pages {
     padding: 12px 0;
   }
 
+  .nav-introduction-supplementary {
+
+    .icon-question-sign {
+      display: inline-block;
+      vertical-align: baseline;
+      margin-right: ($baseline/4);
+    }
+
+  }
+
   .unit-body {
     padding: 0;