fixed SDC UI loading issues

Fixed the API loading issues in slow network environments

Change-Id: I1b8cb779d769c80d41a2303595a0b78dab46f192
Issue-ID: SDC-1347
Signed-off-by: Idan Amit <ia096e@intl.att.com>
diff --git a/catalog-ui/src/app/ng2/app.module.ts b/catalog-ui/src/app/ng2/app.module.ts
index 194d2e0..c3cd060 100644
--- a/catalog-ui/src/app/ng2/app.module.ts
+++ b/catalog-ui/src/app/ng2/app.module.ts
@@ -64,8 +64,10 @@
 
 export function configServiceFactory(config:ConfigService) {
     return () => {
-        config.loadValidationConfiguration();
-        config.loadPluginsConfiguration();
+        return Promise.all([
+            config.loadValidationConfiguration(),
+            config.loadPluginsConfiguration()
+        ]);
     }
 }