New pre-requisite course feature via milestones app

lms/static/sass/multicourse/_course_about.scss

@@ -564,6 +564,20 @@
           font-weight: 700;
         }
       }
+
+      .prerequisite-course {
+        .pre-requisite {
+          max-width: 39%;
+          @extend %text-truncated;
+        }
+        .tip {
+          float: left;
+          margin: $baseline 0 ($baseline/2);
+          font-size: 0.8em;
+          color: $lighter-base-font-color;
+          font-family: $sans-serif;
+        }
+      }
     }
   }
 }

lms/static/sass/multicourse/_dashboard.scss

@@ -482,6 +482,17 @@
         }
       }
 
+      .prerequisites {
+        @include clearfix;
+
+        .tip {
+          font-family: $sans-serif;
+          font-size: 1em;
+          color: $lighter-base-font-color;
+          margin-top: ($baseline/2);
+        }
+      }
+
       // "enrolled as" status
       .sts-enrollment {
         position: absolute;