This removes the bigger of the panels found on the left of the new twitch interface. it also makes the middle panel larger by removing the paddings. also, trivially, flipped the arrows to match the direction the left panel toggle now expands.

note: this does make there be pillarboxing on streams from the removal of padding. I'll see about that in another script.

ps: I figured I might as well remove the prompt at the top asking to switch back to the old interface.