Disabling "Compact contact list" does not re-render the group SVG

[iphydf]

Causing a low-res group picture. Restarting the client fixes it. We should re-render it, or render it at high res in the first place, relying on Qt to downscale when needed.

Compact:

Low-res before restart (non-compact):

After restart (non-compact):

Compact after downscaling via Qt (same session as the 3rd picture):