Merge pull request #1652 from AnHardt/PIDdebug

Marlin/Configuration.h

Marlin/configurator/config/Configuration.h

Marlin/example_configurations/Felix/Configuration.h

Marlin/example_configurations/Felix/Configuration_DUAL.h

Marlin/example_configurations/Hephestos/Configuration.h

Marlin/example_configurations/K8200/Configuration.h

Marlin/example_configurations/SCARA/Configuration.h

Marlin/example_configurations/WITBOX/Configuration.h

Marlin/example_configurations/delta/generic/Configuration.h

.../example_configurations/delta/kossel_mini/Configuration.h

Marlin/example_configurations/makibox/Configuration.h

Marlin/example_configurations/tvrrug/Round2/Configuration.h

Marlin/temperature.cpp