Symbolic Style

• Simple glyphs
• Monochrome, colored based on text color (gtk/qt) (possibly defining named colors like @critical to be taken from gtkrc but I'd rather avoid that). Inject the style as CSS into an SVG.
• One size, designed at 32x32px - 2px grid/stroke
• Naming - suffix '-symbolic' to an existing icon name - allows fallback for theme not having this specific style.
• Symbol theme installs to hicolor.

All of the icons go into the 'status' context, except those explicitly stated otherwise. Any icon in the naming spec can have its -symbolic counterpart, but we'll need to extend the set with a few.

In the name spec already:
=========================

appointment-missed
appointment-soon
audio-volume-high
audio-volume-medium
audio-volume-low
audio-volume-muted
battery-full
battery-good
battery-low
battery-caution
battery-critical
media-eject
media-playback-pause
media-playback-stop
media-playback-start
media-record
media-seek-forward
media-seek-backward
media-skip-forward
media-skip-backward
system-shutdown
system-reboot

Name spec needs to be extended with:
====================================

battery-good-charging
battery-low-charging
battery-caution-charging
battery-critical-charging
numlock-off (these only make sense for the OSD, systray should only show the -on states)
numlock-on
capslock-on
capslock-off
touchpad-on
touchpad-off
display-internal
display-external
display-mirror
display-both
wireless-signal-excellent
wireless-signal-good
wireless-signal-ok
wireless-signal-weak
cellular-signal-excellent
cellular-signal-good
cellular-signal-ok
cellular-signal-weak
bluetooth-on
bluetooth-off
bluetooth-connected