Rename themes -> flavours ? ?

app/javascript/flavours/glitch/util/optional_motion.js

@@ -0,0 +1,5 @@
+import { reduceMotion } from 'flavours/glitch/util/initial_state';
+import ReducedMotion from './reduced_motion';
+import Motion from 'react-motion/lib/Motion';
+
+export default reduceMotion ? ReducedMotion : Motion;