Infra 3899 - remove unnecessary old 2018 ppt

Infra 3899 - leave the original old ppt untouched

Bug 3899 - replace the old ppt with the new ones and keep the same link

Bug 3899 - Add updated Corporate Overview Presentation

Signed-off-by: Yi Liu <yi.liu@eclipse-foundation.org>
Change-Id: Ib7b003d09f0d0285b018442102715054f61f3e9a
3 files changed