i18n LMS and Studio components of course handouts

cms/templates/js/course_info_handouts.underscore

-<a href="#" class="edit-button"><span class="edit-icon"></span>Edit</a>
+<a href="#" class="edit-button"><span class="edit-icon"></span><%= gettext("Edit") %></a>
 
-<h2 class="title">Course Handouts</h2>
+<h2 class="title"><%= gettext("Course Handouts") %></h2>
 <%if (model.get('data') != null) { %>
   <div class="handouts-content">
 
   </div>
 <% } else {%>
-  <p>${_("You have no handouts defined")}</p>
+  <p><%= gettext("You have no handouts defined") %></p>
 <% } %>
 <form class="edit-handouts-form" style="display: block;">
-  <div class="message message-status error" name="handout_html_error" id="handout_error"><%=gettext("There is invalid code in your content. Please check to make sure it is valid HTML.")%></div>
+  <div class="message message-status error" name="handout_html_error" id="handout_error">
+    <%= gettext("There is invalid code in your content. Please check to make sure it is valid HTML.") %>
+  </div>
   <div class="row">
     <textarea class="handouts-content-editor text-editor"></textarea>
   </div>
   <div class="row">
-    <a href="#" class="save-button">Save</a>
-    <a href="#" class="cancel-button">Cancel</a>
+    <a href="#" class="save-button"><%= gettext("Save") %></a>
+    <a href="#" class="cancel-button"><%= gettext("Cancel") %></a>
   </div>
 </form>

lms/templates/courseware/info.html

@@ -40,8 +40,8 @@ $(document).ready(function(){
       <h1>${_("Course Updates &amp; News")}</h1>
       ${get_course_info_section(request, course, 'updates')}
     </section>
-    <section aria-label="Handout Navigation" class="handouts">
-      <h1>${course.info_sidebar_name}</h1>
+    <section aria-label="${_('Handout Navigation')}" class="handouts">
+      <h1>${_(course.info_sidebar_name)}</h1>
       ${get_course_info_section(request, course, 'handouts')}
     </section>
     % else: