fix(): fixed systemjs config for test

public/test/test-main.js

@@ -10,6 +10,8 @@
     baseURL: '/base/',
     defaultJSExtensions: true,
     paths: {
+      'tether': 'vendor/npm/tether/dist/js/tether.js',
+      'tether-drop': 'vendor/npm/tether-drop/dist/js/drop.js',
       'moment': 'vendor/moment.js',
       "jquery": "vendor/jquery/dist/jquery.js",
       'lodash-src': 'vendor/lodash.js',