1. The video windows can be minimized separately.
2. A fullscreen button is added to the video player.
3. Trigger the relative user profile when moving mouse over a username, if admin configures so.
4. Add month/date before hour/minute/second in timestamp in chat history, if it's not of the current day.
5. "Restore" is added in Options panel, helping users to discard custom settings and restore the default settings.
6. Admin panel loading style became the same with the chat client loading panel, etc.