Blender Git Loki

Change compositor color balance to match the sequencer exactly, for this to work linear/srgb conversions need to be done which that nice since it has to convert from/to the color spaces each time, after quite a lot of testing I think its the best way to go.

The problem was that typical lift values (0.5 - 1.5, in our case ) would over saturate shadows so that even minor adjustments would give unusable results.
tweaking the input lift to compensate for this helped with the shadows but would loose the color adjustments for the mid-tones.