OPC-UA: Update CTN "ChangesToSave" status when variable selection change.
- fixes changes not being saved when no other changes happening to configuration
- added CTNMarkModified to ConfigTreeNode in order to generalize
.project
.svghmithumbs
.directory
.pytest_cache
.cache
.coverage_full
syntax: regexp
^tests/.*/build$
^exemples/.*/build$
^.idea/.*
syntax: regexp
^.*\.pyc$
syntax: regexp
^.*~$
syntax: regexp
^.*\.swp$
bug_report.*\.txt
i18n/.*.new$
revision
doc/_build
doc/locale
^.*\$py.class$