fdo#79917: Add 'Save a Copy' to Calc/Impress/Draw.

Was added to writer in LO 4.1 but menu entries for other modules
were overlooked.

Change-Id: I90bcaa727eaa8fd8b35218f73c101f25c7a71d7b
Reviewed-on: https://gerrit.libreoffice.org/10707
Reviewed-by: Andrzej Hunt <andrzej.hunt@collabora.com>
Tested-by: Andrzej Hunt <andrzej.hunt@collabora.com>