Add batch submission script for the NAF (DESY)

The nafbatch.py script allows to submit jobs to the NAF batch farm (at DESY T2).
An array job option is added, which is called with the "-t" parameter.

Example:
nafbatch.py run_test_naf_cfg.py -o TestArray -b 'qsub -t -N CMGarray < batchScript.sh'

This will submit only one array job with the number of tasks corresponding to the number of components-files.