Clarify the EnergyOutput II

Clarify the EnergyOutput II

The function that prints energy (and other thermodynamic values)
is now split into three: one that prints current values, one that
prinst averages at the end of the simulation run and one that prints
annealing temperatures. This way it is much clearer what is done at
each call and how many steps can be passed without calling one function
or another.

Change-Id: Ifc481fe3a5243917d0a290f1e3bec616b6ca6073