Move mute/unmute video button to left side if app is in left-handed mode

[altmoola]

Straight forward, I think the mute/unmute button should move to the left side if the user has configured the app to be in left-handed mode. This prevents the reach across and accidental screen press when browsing with your left hand.

[QuantumBadger]

Agreed -- this setting should also affect the floating comment navigation buttons.