Add missing dependency.

src/operations/index.js

@@ -27,12 +27,14 @@ var operationFormTmpl   = require('./operation.form.tmpl.html'),
 
 var ngResource       = require('angular-resource'),
     ngMessages       = require('angular-messages'),
+    ngUiBootstrap    = require('angular-ui-bootstrap'),
     ngUiNotification = require('angular-ui-notification'),
     ngStrap          = require('angular-strap');
 
 var operationModule = angular.module('accountant.operations', [
     ngResource,
     ngMessages,
+    ngUiBootstrap,
     ngUiNotification,
     ngStrap
 ])