Second pass at adding key files

site/common/templates/fb_sdk.html

@@ -0,0 +1,8 @@
+<div id="fb-root"></div>
+<script>(function(d, s, id) {
+  var js, fjs = d.getElementsByTagName(s)[0];
+  if (d.getElementById(id)) {return;}
+  js = d.createElement(s); js.id = id;
+  js.src = "//connect.facebook.net/en_US/all.js#xfbml=1&appId=193269620735521";
+  fjs.parentNode.insertBefore(js, fjs);
+}(document, 'script', 'facebook-jssdk'));</script>