- Some of TODO notes were laying around but they in fact
were resolved a while ago, removed this notes form the code.
- De-duplicate input color space settings drawing in clip and
image spaces. Moved this stuff to a template which could also
be used in Python.
- Replace py-defined view transform settings panel with a
C-defined template as well. Use it in space panels and
image format settings.
- Remove display settings from color management settings
panels used by different spaces. Use window settings
instead.