* Enable surface reordering support. Automatically update surface in view ordering based on surface collection ordering
* Remove obsolete code
* Enable drag'n'drop support for surfaces within a surface collection. Still missing the collection update part.
* Bring back code lost in prev. commit
* Add code to accept drops in surface collections. Keep view in sync.
* Add command for adding additional surface folders.
* Make sure we use the current surface collection as our parent when importing
* Enable name editing.
Make sure we use the correct surface collection when importing/creating surfaces
* More work on getting surface collections working.
* Clean up naming
* Make sure name for surfaceinviewcollection is read only
* Support drawing surfaces from subcollections, too
* Allow deleting subfolders.
Fix legends in view
* Refactor topmost flag for surface collections.
* Fix reload surface to work in all subfolders, too
Add copy surface skeleton. Actual copy operation is still missing
* Add support for copying surfaces
* Remove possibility to choose I and J slice directions for grid case surfaces.
* Fix warnings.
* Make sure we create the surface folder at the correct level
* More warning fix
* Use XML serialization for copy operation
* Fix missing delete
* Fix typo
* Remove unnecessary method.
* Currently nothing happens in this case, because we insert the dragged item
after the target.
* On balance it seems more intuitive to swap the items in this particular case
even if it is slightly against the regular drag operations.
* Initial WIP
* Identical results with spreadsheet
* Improved and more robust smoothing by filtering points first
* Improved smoothing and more GUI
* Include mixed-label for smoothing threshold
* Implement WBS parameters track
* Much better alignment of tracks without flickering
* Don't replace user description when dragging and dropping tracks
* Fix missing OBG and SH curves
* Fix curve and track D&D
* Make sure parameter curves aren't WBS curves
Getting drag items from selection when the drag is started (when the
interface asks for supported drop actions). Using proposed the drop
action along with the drag items to determine if the drag item can be
dropped onto a given target in the flags() method.
