FireVoxel 263A is released.

1.  4D Volume ->  Save .time:   replaced the RAW subtype selection dialog with the standard "DlgListChoice"

2.  Eliminated the redundant attribute "Concentration Required" from all dynamic models.

3.  Fixed the defect, when selecting the Tofts model (without prior loaded Input Functions) the "Load Input Function" (and other related IF buttons) dialog remained disabled.

4.  Changed convention:  when the Model not requiring Input Function is selected, the InputFunction panel buttons now becoming disabled.

5.  Enable modality CT inside the Toft's models (#8,#9)