Domenico Tiziani / ctools

Convert the cta_root2caldb.py script into a cscript and add unit test. The script only works if PyROOT is installed.

Instead of the cta_root2caldb.py script a generate_prod3_irf.py script was added to the example folder.

… test of the non-normalized map is indeed a real test.

# Conflicts:
#	cscripts/Makefile.am
#	doc/source/reference_manual/index.rst