Add support for gallery command execution
Add support for the possibility to start a service that is not web based from the gallery. This way a visualizer can be started and stopped from the gallery and once DF Storyteller is closed it will terminate all the visualizers.
In order to start a service we have to know:
- What command to execute to start the service
- What command / what to do to stop the service, we could also give the
SIGTERMsignal to the application. And later
SIGKILLif it does not stop within a few minutes.
- What to open (URL?) once service is running. Do we expect the visualizer to open itself to the user? (behind an option?)
If you have suggestions of feedback please let us know.