Bug 14072: Update German web installer for 3.20

Bug 14072: Update German web installer for 3.20

- translates new notice ACQ_NOTIF_ON_RECEIV
- translates new permissions

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Tested German install till "Gratulation, die Installation ist abgeschlossen"
No errors

Signed-off-by: Indranil Das Gupta (L2C2 Technologies) <indradg@gmail.com>
Same results noted as above.

Signed-off-by: Mirko Tietgen <mirko@abunchofthings.net>
Tested installation, checked new translations in Koha and deleted an extra
space in the ACQ_NOTIF_ON_RECEIV notice

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>