Enabled --prod mode for GUI2 - refactored modules

Change-Id: I224fe9564cb225b9ebaed0a43281de54ec6eb274
diff --git a/web/gui2/src/main/webapp/app/fw/nav/nav.module.ts b/web/gui2/src/main/webapp/app/fw/nav/nav.module.ts
index 95a3c31..d25237f 100644
--- a/web/gui2/src/main/webapp/app/fw/nav/nav.module.ts
+++ b/web/gui2/src/main/webapp/app/fw/nav/nav.module.ts
@@ -17,6 +17,7 @@
 import { CommonModule } from '@angular/common';
 import { RouterModule, Routes } from '@angular/router';
 import { SvgModule } from '../svg/svg.module';
+import { OnosRoutingModule } from '../../onos-routing.module';
 
 import { NavComponent } from './nav/nav.component';
 import { NavService } from './nav.service';
@@ -30,6 +31,7 @@
 @NgModule({
   imports: [
     CommonModule,
+    OnosRoutingModule,
     RouterModule,
     SvgModule
   ],