Iterate on graphics design

Remove atmosphere to increase contranst and switch to standard view
transform instead of filmic.

Replace the models for purple, yellow and white to be more consistest
and distinct from each other.

src/changelog.txt

@@ -3,8 +3,5 @@ Version: 0.2.0
 Changes:
   - Renamed mod to Colour Blind Friendly Science Packs
   - Scaled to better match sizes of the items.
-  - Added faux shading.
-  - Fixed mesh issues with green and yellow sciences.
-  - Made purple consistent with the other sciences.
-  - Added base for white scinece.
-  - Made black science darker.
+  - Added faux shading made the colours more vibrant.
+  - Redesigned production, utility and space science to more distinct and consistent shapes.