In dark theme, it is very hard to see the connected/disconnected icons because they are dark too. So I added two white-coloured icons for the dark theme. This also fixed an issue where theme update does not change the icon on the status bar.
Also added a dark mode lock icon as well (and fixed a small bug preventing the lock icon from showing up)
* implement themed icons * fix theme search paths
zhupengfei
BreadFish64
James Rowe
Kloen