Removed additional level of folders while making "Copy Subtree" operation from DICOM dialog box.

Dicom Tree:  Composite Series:   Subseries with exactly same time are also sorted by the increasing Series Number dicom tag.

Dynamic Circle Cursor for Paintbrush\Erase: completely re-engineered
a) Cursor generated on-the-fly, avoiding start-up delay and excessive memory allocation
b) No limit for the cursor size - "Halo" defect is supposed to disappear.

Display warning when unsuitable Tissue concentration or Input Function concentration model is chosen.

Dynamic Experiment module:
When "ROI as a single TAC" mode is used
a)  Output information about the Tissue and Input Function signal conversion.
b) Do not display the Curve Fitting if the model does not support it.