Enlarging too small CharFields of the coverage RangeType model.
CLI: adding new dataset series mamangement commands.
CLI: adding new dataset mamangement commands.
CLI: renaming range-type management commands.
CLI: adding bacward compatibility notes to commands' help.
CLI: Adding EOID checking commands.
CLI: adding data-series linking/unlinking commands.
CLI: removing replaced legacy commands.
CLI Removing replaced lagacy commands.
CLI Removing replaced lagacy commands.