Blender Git Loki

Color management: cleanup of ocio config file

- Minor style cleanup

- Made scene linear space rec709 instead of aces
Reference space is still aces

- Get rid of hardcoded rec -. rec709 transformation on view transforms
This would make view transform be applied on a reference color space
how it's supposed to be.
Since scene linear is rec709 such a hardcoded transform isn't needed
anymore.
This also fixes wrong Log view transform which used to look really
weird and now it's nice and smooth.

- Also made changes to SPI and Nuke configurations to make them behave
properly with reference space of aces.

- Renamed Nuke's rec709 space to nuke_rec709. Probably it could be
replaced with scene rec709, but that's requires more investigation.