Added two buttons to add and remove files.
Files are stored in project inside a directory named "static",
itself located in svghmi CTN instance files. Exemple :
exemples/svghmi_csv_json_img_table/svghmi_0@svghmi/static/
Files are transfered as "extra_files", but with a prefix
added to their name to avoid conflics.
#!/bin/sh
INKSCAPE=inkscape
for fname in `ls *.svg`; do
for i in `cat $fname |grep -o -e '%%[^%]*%%'|sed 's/%//g'`