Updated Spring 2020 to React 16.13.1 and react-redux 7.2.0

Updated Spring 2021 to React 17.0.2 and latest version of all other packages.
- added support for video player

Updated Spring 2022 to React 18.0.0 and latest version of all other packages.
- updated bootstrap to BS5 and react-router v6

https://reacttraining.com/react-router/web/guides/redux-integration