ENH: Record Progression Observe() method.

Convenience method.  Also fix bug in the application (missing the third
Observe).
ENH: Reg Tuner iteration organization.
ENH: Reg Tuner logic emits Qt signals.
ENH: RegistrationTuner -> RegistrationTunerMainWindow.
ENH: Reg Tune: extract the analysis run logic.
BUG: Fix the tuner analysis executable location.
ENH: Simplify iteration widget/logic signal/slot interaction.
ENH: Tuner refactor RunConsoleWidget into its own class.