number of sync changes to push next to "sync now" button

views/index.ejs

@@ -21,7 +21,7 @@
           <span id="top-message"></span>
           <span id="error-message"></span>
 
-          <button class="btn btn-xs" onclick="syncNow();">Sync now</button>
+          <button class="btn btn-xs" onclick="syncNow();">Sync now (<span id="changesToPushCount">0</span>)</button>
 
           <button class="btn btn-xs" onclick="displaySettings();">Settings</button>
 
@@ -276,6 +276,7 @@
     <script src="javascripts/note_history.js"></script>
     <script src="javascripts/recent_changes.js"></script>
 
+    <script src="javascripts/status.js"></script>
     <script src="javascripts/sync.js"></script>
     <script src="javascripts/utils.js"></script>
   </body>