v1.28.6

-- Modify saving of processing output (in distributed file storage scheme) for subject data in subject folders rather than group folder.

-- Since the change to error check proc stream function call loaded from groupResults, it now forces loading user function calls from a proc stream config file. But this doesn't work for AtlasViewer which has no need for function call chain, only the proc stream output. Therefore, create an alternative constructor call for DataTreeClass, with 'noloadconfig' option which means do not prompt user to load processing stream function (and implicitly allow an empty proc stream function call chain).

-- Fixed small type in ProcStreamClass which would generate an error if executed.

-- Fix minor appearance issue in MainGUI.fig, in the Plot Window panel where buttons, checkboxes and edit boxes for pan left/right and the range fixing controls changed location to being bunched up at the botton and their units have been changed from 'normalized' to 'characters'. Reversed this.