Replacing network-offline (old version 2xmonitor) with NM wlan 0% signal strength icon

[Peteris Krisjanis]

> The challenge that we're facing is:
>
> - we have at least 3 types of network connections that should be
> represented by the appropriate icon:
> 1. Wireless
> 2. Wired
> 3. 3G
>

Throw general modem connection in a bowl, because it would be needed
for bluetooth and simple dialups (which I hope will be supported
somewhere in the future by N-M).

Just my two euro cents,
Peter.