BUG #14540: Fix issue with disappearing columns.

The bug was introduced due to the view reordering columns as the model was
reset. Fixed that by moving the re-ordering logic to vtkSpreadSheetView itself.
Also sorted all columns based on array names.

Change-Id: If912a690f61205383922c8318b0d621e15e68fb3
Merge topic '14540_fix_disappearing_columns' into next

63807bba BUG #14540: Fix issue with disappearing columns.