I inverted the original sifr icon theme as is - finetuning will happen later.

Change-Id: I35eaccc539542465010c89d1ef35b0b0a449d243
Reviewed-on: https://gerrit.libreoffice.org/38377Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Yousuf Philips <philipz85@hotmail.com>