make regions work

- monkey path ragconnect to use non-static mappings (allow access to containing node)
- add dumpAst to visualize model info
- add config to parse region definitions (in JSON)
- move Region to model (previously, regions would be overridden by update of scene)
- added self-loops checking command-topic (currently making problems because of protobuf)
- reworked operation computation based on regions
- monkey-patch model to use collaboration-zones (for site-B)