feat(Flash): Normalize flash types with object

help prevent typo errors

common/utils/flash.js

@@ -0,0 +1,10 @@
+import _ from 'lodash';
+
+export const alertTypes = _.keyBy([
+  'success',
+  'info',
+  'warning',
+  'danger'
+], _.identity);
+
+export const normalizeAlertType = alertType => alertTypes[alertType] || 'info';