fdo#81309: Adjust references during sort.

Change-Id: I2b98610f6b774400ecfaffe2905201c27fcab33f
This undo class is no longer used.

Change-Id: I8c53ba5bd839a6b8c8f65f05bb2b261a5bd02dbb
fdo#81309: Write test for this.

Change-Id: I98216a60b3b82bdac14cd777b85502dc09f82dd9
fdo#81309: Writer another test.

Change-Id: Ie912560551e50520c4f143884490c369a739728b
fdo#81309: Write another test.

Value and formula cells within the same sorted column.

Change-Id: I62f1ee73c118a938d224bb11d2fbbc9ea386fbd3
fdo#81309: Write test for out-of-place sorting.

Change-Id: Id98c080e2b1ba120b1ac4f9f27e6ab10574daa88
Add additional checks for undo and redo here.

Change-Id: I9fde607ce87d4c499bc6adedddc71e726fb8a01c