Add metabase-bootstrap.js to testing environment to emulate settings inlined in our index.html

frontend/test/karma.conf.js

@@ -7,6 +7,7 @@ module.exports = function(config) {
     config.set({
         basePath: '../',
         files: [
+            'test/metabase-bootstrap.js',
             '../resources/frontend_client/app/dist/vendor.bundle.js',
             '../resources/frontend_client/app/dist/app.bundle.js',
             '../node_modules/angular-mocks/angular-mocks.js',

frontend/test/metabase-bootstrap.js

+window.MetabaseBootstrap = {
+  "timezones": [
+    "GMT",
+    "UTC",
+    "US\/Alaska",
+    "US\/Arizona",
+    "US\/Central",
+    "US\/Eastern",
+    "US\/Hawaii",
+    "US\/Mountain",
+    "US\/Pacific",
+    "America\/Costa_Rica"
+  ]
+};