Francois Brun / ctools

Conflicts:
	ChangeLog
	NEWS
	src/ctbkgcube/ctbkgcube.cpp
	test/test_ctools.sh

Conflicts:
	scripts/Makefile.am

…)-function of individual ctools

…odel with a standard diffuse cube background model that can be used for stacked analysis. The model container can be either retrieved using the models() method, or it can be written to disk with the save() method.