removed garbage in svg-base64, added svg close tag, fixed ul tag.
Added test case for the added code.

Change-Id: I4f07036300031e1e97b118466ebf75d8b9c46e01
Reviewed-on: https://gerrit.libreoffice.org/21218Tested-by: jan iversen <jani@documentfoundation.org>
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: jan iversen <jani@documentfoundation.org>