Fix screen width optimization

Hi, I usually use Teamspeak in a FHD screen, splitted by half with my browser.
The problem here is the chat, when someone sends like a youtube video, I can only see the left part of it, and the rest is cut, unless I make the window fullscreen or almost.

Maybe a solution might be letting people select if they want the chat on a third column on the right (as it’s now), or have the old style ts3 chat on the bottom.