Eliminated the need for the user to specify the "anchor timepoint" during the PET to Anatomy registration.  Timepoint of Maximum average singnal is selected and the registration is performed to that timepoint
to determine the required transformation for all PET timepoints.

FilmView display:  for large images it is quite slow, with 4.8 sec to display all slices of 344x344x170 volume.
Fully parallelized with the x3.5 speed-up (down to 1.37 sec)

Finalizing integrated PET->MPRAGE workflow to spare the user from a separate Orientation change and Cropping operation.  This is under the MainMenu>Applications>PET>Register to Anatomy.