Since the backend parameters were hardcoded not too long ago, for testing the
parameters had to equal the backend parameters. Now that they are not hardcoded
we can use higher quality parameters in export contexts.
OCIO config was set on a per-project basis, but we were using a singleton for
the ColorManager that would break if more than one project was ever open.
Now the ColorManager belongs to the Project and is always accessed through the
Project.
itsmattkc