This PR is to fix "[Examples] Problem with query parameters in with-redux-persist (#15484)"
The root cause is
persist/rehydrate action will issue twice when query parameter is set. But persistStore initial bootstrap is not ready yet. So i add a bootstrap callback and force persistor to persist again to make overall state correct. I also modify the loading prop to a `<div>loading</div>` because it's confuse to set Component in loading prop.
Attached the GIF
Closes#15484
* Moved the state to the clock component
* Refactored the store according to the new requirements
* Refactored _app so it uses the new store
* This file is no longer needed
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
Related to [11014](https://github.com/zeit/next.js/issues/11014)
First and most important, removed the getInitialProps and used getStaticProps.
Then, I refactored Counter, DataList and Examples components.
I have refactored them from class-based components to functional. Also in each component the redux implementation was refactored using the new hooks API, which resulted in ~40% less code.
If you want me to change anything or you are not satisfied with any given change, I'm open to suggestions.
