Use symbolic volume and mic icons

[Danielle Foré]

Indicator sound should use the symbolic namespace for it's icons. This would create greater upstream theme compatibility as well as reduce the need to ship and maintain separate icon themes for dark and light panels and menus. The symbolic icon names in question are as follows:

audio-volume-high-symbolic
audio-volume-medium-symbolic
audio-volume-low-symbolic
audio-volume-muted-symbolic

microphone-sensitivity-high-symbolic
microphone-sensitivity-medium-symbolic
microphone-sensitivity-low-symbolic
microphone-sensitivity-muted-symbolic

[Sergey "Shnatsel" Davidoff (shnatsel)]

awaiting decision on https://blueprints.launchpad.net/elementaryos/+spec/indicator-strategy

[Danielle Foré (danrabbit)]

Sergey that blueprint is entirely not relevant to this bug.

I would assume "the right thing to do" here would be to upstream any changes that we could all benefit from.

[Danielle Foré (danrabbit)]

Sergey can you please explain why this has been marked as incomplete and what can be done to complete it?

[Sergey "Shnatsel" Davidoff (shnatsel)]

I've marked it incomplete for elementary OS because it's not clear if the distro "department" should take any action on this.
Well, that's a poor excuse XD My bad, sorry.
This is a simple fix, so I tried to carry out your proposal right away; I'm currently stuck at "notification-audio-volume-high" icon; should it be symbolic or not?