Nathan Kelley-Hoskins / ctools

… energy bins per decade.

…ct, csobs2caldb, csobsinfo, csobsselect, and csphagen. The script cstsmapsplit has cslikelihood as base class.

…cripts now from csobservation instead of cslikelihood since they do not use proper optimizers.

The scripts cslightcrv, csphasecrv, cspull, cssens, csspec, cstsdist, and cstsmapsplit now have a "statistics" parameter to allow setting of the optimizer statistic. Except of cstsmapsplit, all of the scripts now derive from the cslikelihood base class.