Fix $name$ in confirmation dialogs

Our i18n shim supports multiple substitutions if you give it an array of strings
to use as replacements.

// FREEBIE

js/views/conversation_view.js

@@ -846,10 +846,11 @@
                     message = i18n('changedRecentlyMultiple');
                 }
             } else {
+                var contactName = contacts.at(0).getTitle();
                 if (isUnverified) {
-                    message = i18n('changedSinceVerified', contacts.at(0).getTitle());
+                    message = i18n('changedSinceVerified', [contactName, contactName]);
                 } else {
-                    message = i18n('changedRecently', contacts.at(0).getTitle());
+                    message = i18n('changedRecently', [contactName, contactName]);
                 }
             }