SIFR: updates to a few calc toolbar icons

Change-Id: Iafa9dec06463b5a7bc21dd893c540bb5dcc56e15
Reviewed-on: https://gerrit.libreoffice.org/12378
Reviewed-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>
Tested-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>