Tree component in the starter-kit does not behave the same way.

Issue type

I'm submitting a ... (check one with "x")

• bug report

Issue description

Current behavior: Tree component in the starter-kit does not have arrow pointer and won't expand on mouse click, but expanding the nodes work using keyboard arrow keys.

Expected behavior: Starter-kit tree component to have the same functionality as ngx-admin live demo.

Steps to reproduce: Clone starter-kit npm install angular-tree-component Activate starter-kit tree component by adding it to routing and module declarations.

Related code:

** pages-routing-module.ts**

import { TreeComponent } from './components/tree/tree.component';
...
export const routedComponents = [
  TreeComponent,
];

** pages-module.ts**

import { TreeModule } from 'angular-tree-component';
import { PagesRoutingModule, routedComponents } from './pages-routing.module';

The rest of the starter-kit code was not modified.

Other information:

npm, node, OS, Browser

Node: v10.5.0
NPM: 6.0.1
OS: Ubuntu 18.04 LTS
Browser: Chrome Version 67.0.3396.87 (Official Build) (64-bit)

Angular, Nebular

"@angular/core": "6.0.0",
"@nebular/auth": "2.0.0-rc.9",
"@nebular/security": "2.0.0-rc.9",
"@nebular/theme": "2.0.0-rc.9",