Added a warning message to 3D and 4D registration dialog boxes.  When the user have chosen the URAL-UNI registration measure, but the Sorce\Target Noise were not specified, the warning is displayed when user presses OK button.

Fixed the Phillips diffusion loading problem. The standard b-value DICOM Tag is used,  but different from GE and SIEMENS, the b-value was encoded as double floating point.

Investigating DICOM Rescale\Intercept problem with the Philips diffusion volume.