Optimized images

Same method as before, just making it up to date

Change-Id: Ifa8a53b4fc62c6c80f7db553d5227e6c382ce280
Optipng -nc -nb -o7

Some new images and some reverted in merge

Change-Id: Ib45e34f1f18e2405e2c07e489ee3fd7bfc1cfbab
Camera: ISO C++11 build fixes

Fix build in ISO C++11 mode:
- enum typesafety
- constexpr

Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>