13.3: Tabs Disabled example
===========================
**Primary Actor**: User

**Scope**: Ngx-bootstrap DEMO / BS version 3&4

**Goal**: Show user tab example with manual selection directly from component

Main success scenario:
----------------------
1. User opens Tabs demo page
2. User clicks on Disabled tabs sub-menu
3. User see tabs component with 4 tabs and clickable button "Enable/Disable third tab"
4. By default, the first tab opened and there is content inside: "Static content"
5. When user clicks on "Enable/Disable third tab", then third tab become not clickable
6. When user clicks on third tab, nothing happens
7. When user clicks on "Enable/Disable third tab" again, then third tab become active
8. When user clicks on third tab, then this tab chosen with appropriate content inside

Variations:
-----------
2*. User scroll to Disabled tabs sub-menu
