SIFR: add new symbol icons and update list icons

Change-Id: I52a6092e701a4af211c98f2f46bdb2bef1bee9d2
Reviewed-on: https://gerrit.libreoffice.org/12323
Reviewed-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>
Tested-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>