refactoring (#178)

* unify components import

* refactor config and app context

* refactor icons

* refactor date, error, mxid and storage

* refactor synapse utils

src/components/ExperimentalFeatures.tsx

@@ -93,3 +93,5 @@ export const ExperimentalFeaturesList = () => {
     </Stack>
   </>
 }
+
+export default ExperimentalFeaturesList;