UI Compact Mode

Hello ### Suggestion In the suggested UI design changes are as follow: 1. Narrower `Title Bar` at the top of page. 2. Locate `Dark Mode` option in title bar. 3. Show title of topics with publish time but, without main text. In this mode more title can be seen by user. 4. A tick next to title of topics can show that topics is closed and final answer approved (For questions). Thanks