Load all inbox convos before rendering

This is a better alternative to the fix in 0434c4b, which causes
problems when creating a new conversation from entering a phone number.

// FREEBIE

js/background.js

@@ -35,9 +35,6 @@
     // start a background worker for ecc
     textsecure.protocol_wrapper.startWorker();
 
-    // load the initial set of conversations into memory
-    ConversationController.updateInbox();
-
     extension.onLaunched(function() {
         console.log('extension launched');
         storage.onready(function() {

js/conversation_controller.js

@@ -74,7 +74,7 @@
             });
         },
         updateInbox: function() {
-            conversations.fetchActive();
+            return conversations.fetchActive();
         }
     };
 })();

js/index.js

@@ -20,6 +20,7 @@
     function render() {
         extension.windows.getBackground(function(bg) {
             extension.windows.getCurrent(function(appWindow) {
+                bg.ConversationController.updateInbox().then(function() {
                     try {
                         if (view) { view.remove(); }
                         var $body = bg.$('body',document).empty();
@@ -34,7 +35,7 @@
                     } catch (e) {
                         logError(e);
                     }
-
+                });
             });
         });
     }

js/views/inbox_view.js

@@ -74,7 +74,7 @@
             }).render();
 
             this.inboxListView.listenTo(inboxCollection,
-                    'change:active_at',
+                    'add change:active_at',
                     this.inboxListView.onChangeActiveAt);
 
             this.searchView = new Whisper.ConversationSearchView({