Updates required for game integration#1

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dannya wants to merge 14 commits intolcdupree:masterfrom

dannya:master

Commits on Jul 21, 2019

Remove 3rd key option for Up command (since it complicated the controls UI), re-enable Mute key configuration UI item.
dannya
committed

Commits on Aug 14, 2019

Mute game on initial load.
dannya
committed

Commits on Aug 27, 2019

Commits on Sep 20, 2019

* New settings UI renderers for Keyboard Shortcuts and Mute button.
dannya
committed

Commits on Sep 23, 2019

Return to original arrow key glyphs.
dannya
committed

Commits on Oct 21, 2019