New command `idesl-nodename-to-hostname` to convert `nXXX` to `rXXcYYbZZnWW`.

This is a local command for the UZH Schroedinger cluster.
Fix lines limit in `ilom-console-history`.
New command `idesl-set-oom-adj` to set `/proc/PID/oom_adj` for all processes owned by a system user.