add elementary, hicontrast, human and sifr openremote icons

Change-Id: Iefe2db951a8127be387e79453cae0131bf0648c3
Reviewed-on: https://gerrit.libreoffice.org/20681Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>