[update] retake rows and columns context menu images

- Rows/Columns submenus now show Row height, Column width
  and the "Remove row N" / "Remove column X" labels of v6.0.4
- add, remove, freeze, unfreeze, hide and show screenshots
  for rows and columns retaken with the fixed hover highlight
- AutoFit steps (three dots icon, Fit to data) retaken on
  the same dataset as the other images

Author: mafanya23