Check trust store for latest identity key info before sending

We definitely want the latest information from our local database before
attempting to send.

FREEBIE

js/views/conversation_view.js

@@ -705,6 +705,9 @@
             options = options || {};
             _.defaults(options, {force: false});
 
+            // This will go to the trust store for the latest identity key information,
+            //   and may result in the display of a new banner for this conversation.
+            this.model.updateVerified().then(function() {
                 var contacts = this.model.getUnverified();
                 if (!contacts.length) {
                     return this.checkUntrustedSendMessage(e, options);
@@ -717,6 +720,7 @@
                 }
 
                 this.showSendConfirmationDialog(e, contacts);
+            }.bind(this));
         },
 
         checkUntrustedSendMessage: function(e, options) {