Add support EventSource to CSSS theme.
Add support EventSource to CSSS theme.

Signed-off-by: Laurent Arnoud <f1b010126f61b5c59e7d5eb42c5c68f6105c5914@spkdev.net>

DSIW/slideoff,DSIW/slideoff,nono/slide-em-up,nono/slide-em-up,DSIW/slideoff