Michael Mayer / ctools

# Conflicts:
#	src/cttsmap/cttsmap.cpp

…cttsmap and cstsmapmerge to the new logging conventions

… cases, restructured csiactobs to avoid code duplication and added csobsdef::obs() function to retrieve observation container

# Conflicts:
#	cscripts/csiactcopy.py
#	cscripts/csiactdata.py

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.