Bug 506268 - Session restore fails halfway through, leaves tabs unloaded

Load Weave off of the event that triggered sessionstore so that it and its callers can finish loading before autoconnect does network activity.

services/sync/Weave.js

@@ -62,7 +62,7 @@ WeaveService.prototype = {
     */
     case "sessionstore-windows-restored":
       Cu.import("resource://weave/service.js");
-      Weave.Service.onStartup();
+      Weave.Utils.makeTimerForCall(function() Weave.Service.onStartup());
       break;
     }
   }