Fixes #161

The first message sent to a new contact was throwing 'Unknown Group'.
This was because we didn't wait for the initial save to sync the `type`
attribute to indexedDB. Instead, don't trigger the conversation to open
until it has finished saving.

js/views/new_conversation_view.js

@@ -189,8 +189,11 @@ var Whisper = Whisper || {};
         conversation.fetch().then(function() {
             this.$el.trigger('open', { modelId: conversation.id });
         }.bind(this)).fail(function() {
-            if (conversation.save()) {
+            var saved = conversation.save(); // false or indexedDBRequest
+            if (saved) {
+                saved.then(function() {
                     this.$el.trigger('open', { modelId: conversation.id });
+                }.bind(this));
             }
         }.bind(this));
     },