Restructure async route code

src/routes/asyncRoutes/admin.ts

@@ -0,0 +1,10 @@
+import { AsyncRoute } from '.';
+
+export const ASYNC_ADMIN_ROUTES: AsyncRoute[] = [
+    { path: 'usernew.html', page: 'user/usernew' },
+    { path: 'userprofiles.html', page: 'user/userprofiles' },
+    { path: 'useredit.html', page: 'user/useredit' },
+    { path: 'userlibraryaccess.html', page: 'user/userlibraryaccess' },
+    { path: 'userparentalcontrol.html', page: 'user/userparentalcontrol' },
+    { path: 'userpassword.html', page: 'user/userpassword' }
+];