beremiz

Add special nodes at HMI Tree root, fix code to handle special node (no path).
svghmi
2019-08-20, Edouard Tisserant
282500e03dbc
Add special nodes at HMI Tree root, fix code to handle special node (no path).
<?xml version='1.0' encoding='utf-8'?>
<BaseParams Name="python" IEC_Channel="0"/>