Add per-user default currency

js/constants/SecurityTemplateConstants.js

@@ -1,6 +1,8 @@
 var keyMirror = require('keymirror');
 
 module.exports = keyMirror({
+	FETCH_CURRENCIES: null,
+	CURRENCIES_FETCHED: null,
 	SEARCH_SECURITY_TEMPLATES: null,
 	SECURITY_TEMPLATES_SEARCHED: null
 });