Replay data synchronizer remove datasource bugs

[philip-khaisman]

When calling removeDatasource on the DataSynchronizerReplay class we were making a call that disconnected all datasources from the synchronizer, not just the one passed to the method. This meant that in a client such as the webtak plugin when we toggled one visualization off it stopped the connections of all visualizations.

Additionally, the removeDataSource method publishes a remove event which is handled by the data synchronizer replay worker which stops the data synchronizer altogether.

Now we only disconnect the datasource that's passed to the removeDatasource method and we keep the synchronizer working so that the streaming of connected datasources continues.

Test

• Start a node and configure a system driver database with historical data that has at least 2 visualizations
• Start the webtak plugin, open it, and launch the osh plugin
• Enter playback mode
• Start playback (default start timestamp should work)
• Verify that visualizations are displayed
• Toggle one of the visualizations off
• Verify that the correct visualization is removed from the map, that the other visualizations persist and continue updating

[philip-khaisman]

TODO: Verify that the datasource is indeed being disconnected with this change. Or should it? What happens if we disconnect and then toggle the visualization on. Where will the playback start? I'm assuming it will work since the synchronizer is managing the timestamps