Tray icons (tray.png, tray-light.png, tray-dark.png) and the Snap
launcher icon were left at the v1.2.4 hand-drawn outline Q during the
v1.2.5 branding refresh. Regenerate them from the canonical
icon-symbolic.svg / 256x256.png so the system tray, KSNI panel and
Snap launcher show the matte-vinyl Q.
Also drop the drop-shadow filter on the login screen logo: with the
new icon's edge rim and inner highlight, the extra ambient shadow is
redundant and visually muddies the artwork.
cc
vicrodh
570532ce90