Add translation for components and credentials

* Add typeahead feature of the Lookup component

awx/ui/client/lib/services/base-string.service.js

@@ -0,0 +1,23 @@
+let i18n;
+
+function BaseStringService (namespace) {
+    let t = i18n._;
+
+    this.t = t;
+    this[namespace] = {};
+
+    this.CANCEL = t('CANCEL');
+    this.SAVE = t('SAVE');
+    this.OK = t('OK');
+}
+
+
+function BaseStringServiceLoader (_i18n_) {
+    i18n = _i18n_;
+
+    return BaseStringService;
+}
+
+BaseStringServiceLoader.$inject = ['i18n'];
+
+export default BaseStringServiceLoader;

awx/ui/client/lib/services/index.js

@@ -1,7 +1,9 @@
 import EventService from './event.service';
 import PathService from './path.service';
+import BaseStringService from './base-string.service';
 
 angular
     .module('at.lib.services', [])
     .service('EventService', EventService)
-    .service('PathService', PathService); 
+    .service('PathService', PathService)
+    .service('BaseStringService', BaseStringService);