Hook up "View Live" buttons and get "New Static Tab" working again.

cms/templates/edit-tabs.html

@@ -9,7 +9,8 @@
       el: $('.main-wrapper'),
       model: new CMS.Models.Module({
         id: '${context_course.location}'
-      })
+      }),
+      mast: $('.wrapper-mast')
     });
   </script>
 </%block>
@@ -36,7 +37,7 @@
 <div class="wrapper-content wrapper">
   <section class="content">
     <div class="introduction has-links">
-      <p class="copy">Static Pages are additional pages that supplment your Courseware. Other course authors have used them to share a syllabus, calendar, handouts, and more.</p>
+      <p class="copy">Static Pages are additional pages that supplement your Courseware. Other course authors have used them to share a syllabus, calendar, handouts, and more.</p>
       <nav class="nav-introduction-supplementary">
         <ul>
           <li class="nav-item">