Clicking on mic icon mutes output instead of input

[egormanga]

Expected behavior: click volume icon ⇒ mute output, click microphone icon ⇒ mute input.

[peter-lyons-kehl]

Thank you for this Egor.

For anyone developing this: See https://github.com/wbolster/nothing-to-say for an API to mute/unmute a microphone.