Michael Mayer / ctools

Conflicts:
	doc/source/reference_manual/csresmap.rst

We cannot use the ctool base class for the Python scripts as this is an abstract class an Python does not know the concept of abstract classes. Hence for Python we need a real class to derive from, which we implement by adding the cscript class to the ctool.i interface.

…vise csresmap parameters and attach response to observation if needed.