Add option to sound applet to disable override of systray icons for compatible players
Fix some typos
Merge branch 'systray-sound-settings' of https://github.com/collinss/Cinnamon into collinss-systray-sound-settings

Conflicts:
	files/usr/share/cinnamon/applets/sound@cinnamon.org/applet.js
	files/usr/share/cinnamon/applets/sound@cinnamon.org/settings-schema.json