> net, rpc: change CNodeStats::m_network from string to Network
> gui: create GUIUtil::NetworkToQString() utility function
> gui: add network column in peers tab/window
> gui: rename peer tab column headers, initialize in .h
> gui: display network in peer details
This is a backport of [[https://github.com/bitcoin-core/gui/pull/162 | core-gui#162]]