Refs #8631 Improved the value of Plank constant

Substituted 4.136 for 4.135665616
Also renamed the associated variable to m_h

modified:  DiffRotDiscreteCircle.h
modified:  DiffRotDiscreteCircle.cpp
modified:  DiffRotDiscreteCircleTest.h
Refs #8631 elastic part: moved constraint initialization

modified: DiffRotDiscreteCircle.h
modified: DiffRotDiscreteCircle.cpp
Refs #8631 Inelastic part: moved constraints to init

modified: DiffRotDiscreteCircle.h
modified: DiffRotDiscreteCircle.cpp
Refs #8631 moved steps to init

modified: DiffRotDiscreteCircle.h
modified: DiffRotDiscreteCircle.cpp
modified: DiffRotDiscreteCircleTest.h
Merge branch 'feature/8631_DiffRotDiscreteCircle_init' into develop