Task #9800: support for remote clusters in Hertfordshire and Juelich. changes in command construction and special handling of node setup.

Task #9764: Provide input filename differently to PyBDSM to allow it to derive a proper logfile location

Task #8415: Use docker-run-slurm.sh script, to contain resources and propagate kill signals in SLURM

Task #9678: Fix use of socket.recv in jobserver and lofarnode in case of closed connections and interrupts

Task #9678: Read POLLPRI data as well, and wait for stdout/stderr to signal partial close before calling communicate(), instead of waiting for the PID to exit

Task #9159: Generic pipeline: added possibility to split the steplist in different sublists (pipeline.steps.<sublist>).

Task #9709: Added environment variable expansion in string replacement feature of the generic pipeline.

Task #9623: Use 2 threads/NDPPP for even faster processing (both for demixing and non-demixing preprocessing pipelines)