SVGHMI: Prepare accepting multiple clients on multiple HMI: Use POULibrary new capability to add variables to PLC Configuration. Now heartbeat and HMI tree root are added by the library part of SVGHMI, and not by each instance.
#!/bin/bash
INKSCAPE=inkscape
for i in `cat icons.svg |grep -o -e '%%[^%]*%%'|sed 's/%//g'`
