created BasicTaskDeleg and used to CalibrationDialog
created ScrolledTaskPreview in order to break TaskPreview

--the best way to go would be ScrolledTaskPreview to use all
the same properties and functionality from TaskPreview but
I dont know if that's possible. A huge task here and very
dangerous in case something crashes...
started separation of TaskPreviewDeleg

--design decision is that because BasicTaskDeleg is
a simple one will be standalone but TaskPreviewDeleg
and ScrolledTaskPreview must share as much code as
possible for better future maintenance
separation of TaskPreviewDeleg is going very good
Separation success for TaskPreviewDeleg

--by separating the code for TaskPreviewDeleg and
ScrolledTaskPreviewDeleg maintenance now can be a lot easier.
TaskPreviewDeleg is used in Everywhere panel and
ScrolledTaskPreviewDeleg is used in the Desktop dialog.