Added social links and fixed header bug

lms/static/sass/_home.scss

@@ -19,7 +19,8 @@
       margin: 0 auto;
       padding: 200px 10px 0px;
       position: relative;
-      width: 100%;
+      max-width: 1200px;
+      min-width: 760px;
     }
 
     .title {

lms/templates/index.html

@@ -19,15 +19,15 @@
 
           <div class="secondary-actions">
             <div class="social-sharing">
-              <div class="sharing-message">Share with friends and family!</div>
-              <a href="#" class="share">
+              <div class="sharing-message">Stay up to date with all edX has to offer!</div>
+              <a href="https://twitter.com/edXOnline" class="share">
                 <img src="${static.url('images/social/twitter-sharing.png')}">
               </a>
-              <a href="#" class="share">
+              <a href="http://www.facebook.com/EdxOnline" class="share">
                 <img src="${static.url('images/social/facebook-sharing.png')}">
               </a>
-              <a href="#" class="share">
-                <img src="${static.url('images/social/email-sharing.png')}">
+              <a href="https://plus.google.com/108235383044095082735/posts" class="share">
+                <img src="${static.url('images/social/google-plus-sharing.png')}">
               </a>
             </div>
           </div>
@@ -36,7 +36,7 @@
 
         <a href="#video-modal" class="media" rel="leanModal">
           <div class="hero">
-            <img src="${static.url('images/courses/space3.jpg')}" />
+            <img src="${static.url('images/courses/edx_hp_video_thumbsmall.jpg')}" />
             <div class="play-intro"></div>
           </div>
         </a>

lms/templates/portal/course_about.html

@@ -68,13 +68,12 @@
         <header>
           <div class="social-sharing">
             <div class="sharing-message">Share with friends and family!</div>
-            <a href="#" class="share">
+            <a href="http://twitter.com/intent/tweet?text=I+just+registered+for+${course.number}+${get_course_about_section(course, 'title')}+through+@edxonline:+http://edx.org/${reverse('about_course', args=[course.id])}" class="share">
               <img src="${static.url('images/social/twitter-sharing.png')}">
             </a>
-            <a href="#" class="share">
-              <img src="${static.url('images/social/facebook-sharing.png')}">
+            <a href="http://www.facebook.com/EdxOnline" class="share"> <img src="${static.url('images/social/facebook-sharing.png')}">
             </a>
-            <a href="#" class="share">
+            <a href="mailto:?subject=Take%20a%20course%20with%20edX%20online&body=I%20just%20registered%20for%20${course.number}%20${get_course_about_section(course, 'title')}%20through%20edX:+http://edx.org/${reverse('about_course', args=[course.id])}" class="share">
               <img src="${static.url('images/social/email-sharing.png')}">
             </a>
           </div>