
Replace NMNetworkMenuItem with NMConnectionItem, based on NMVPNConnectionItem, and replace NMDevice with NMConnectionSection and NMConnectionDevice. Since this rips apart NMDevice, and since wi-fi should not be connection-based, we'll temporarily remove NMDeviceWireless. We'll add it back in a later commit, along with the new Wi-Fi dialog. https://bugzilla.gnome.org/show_bug.cgi?id=704670