Camera: use newly available getters in Frustum, fix hFov-vFov mixup in Camera::ToFrustum().
Light: add minor todos regarding attr names of couple attrs + s/SpotLight/Spotlight
Camera::ToFrustum: use Frustum::SetVerticalFovAndAspectRatio in order to achieve proper results.
Merge remote-tracking branch 'origin/master' into gtest