fix: Setting selected Bottleneck null caused Nullpointer Exception. The computed property "selected Bottleneck" returns null, when no Bottleneck was found. Clicking on the map triggers as of now an "identify" operation. If no bottleneck is selected, the result of the property is null. In turn is referencing selectedBottleneck in templates screwed. For now: the text is only changed, when a new Bottleneck is selected.