Add view course button

This reverts commit 55268dec.

lms/static/js/spec/learner_dashboard/course_enroll_view_spec_2017.js

@@ -143,7 +143,7 @@ define([
             singleCourseRunList[0].is_enrolled = true;
 
             setupView(singleCourseRunList);
-            expect(view.$el.html().trim()).toEqual('');
+            expect(view.$('.view-course-button').text().trim()).toEqual('View Course');
             expect(view.$('.run-select').length).toBe(0);
         });
 

lms/static/sass/views/_program-details.scss

@@ -303,6 +303,28 @@
     }
 
     .course-enroll-view {
+
+        .view-course-button {
+            background: palette(primary, dark);
+            border-color: palette(primary, dark);
+            height: 37px;
+            padding: 7px 18.5px 0 18.5px;
+            width: auto;
+            border-radius: 0;
+            text-align: center;
+            font-size: 0.9375em;
+            margin-top: 5px;
+
+            /* IE11 CSS styles */
+            @media(min-width: $bp-screen-md) and (-ms-high-contrast: none), (-ms-high-contrast: active) {
+                @include float(right);
+            }
+
+            @media(min-width: $bp-screen-lg) {
+                margin-top: 0px;
+            }
+        }
+
         .enroll-button {
             width: 100%;
 
@@ -385,6 +407,10 @@
 
         }
 
+        .section:not(:first-child) {
+            margin-top: 0;
+        }
+
         .course-details {
             float: none;
 

lms/templates/learner_dashboard/course_enroll_2017.underscore

-<% if (!is_enrolled) { %>
+<% if (is_enrolled && (typeof expired === 'undefined' || expired === false)) { %>
+    <a href="<%- course_url %>" class="view-course-button btn-brand btn cta-primary">
+        <% if (is_course_ended) { %>
+            <%- gettext('View Archived Course') %>
+        <% } else { %>
+            <%- gettext('View Course') %>
+        <% } %>
+    </a>
+<% } else { %>
     <% if (enrollable_course_runs.length > 0) { %>
         <% if (enrollable_course_runs.length > 1) { %>
             <div class="run-select-container">