Additionally/Sideeffects:
- Fix vstFreeNode to delete the item from the array, not only free the item itself
- Change/Rename GetSelectedNodesFromVT to GetVTCaptions and give it the ability to return all captions, not only the selected. This function is very useful now and saves writing much redundant code.
A table with 500 columns needed 3 seconds to display in the TSortListView, now that takes less than a half second.
Additionally/Side effects:
- TVTreeData structure moved to helpers.pas to be able to use it in new function GetSelectedNodesFromVT.
- ListTablesEditing dropped. We don't need to disable any shortcut there because there is none set.
- Avoid potential AVs when accessing not created items in TVTreeData.Captions
