Create bandaid fix for subsequent DOS visualisations without restarting Inviwo.
Create bandaid fix for subsequent DOS visualisations without restarting Inviwo.

The Partial Pick All processor is removed by network.removeProcessor in dos.py,
but this doesn't erase it completely. Add code for circumventing this.

rartino/ENVISIoN,rartino/ENVISIoN,rartino/ENVISIoN,rartino/ENVISIoN,rartino/ENVISIoN,rartino/ENVISIoN