* Add extension data to /v1/player endpoint
* Use node gradle plugin for building with yarn
* Add /v1/whoami endpoint
* Add back button to sidebar
* Selenium Tests for locale related js errors
* Convert locale system to use YAML-based storage
* Added a conversion process that runs on startup
* Replace cravatar.eu with crafatar.com for skins (more reliable)
* Add the Header made by Kopo to React
Co-authored-by: Antti Koponen <koponen942@outlook.com>
Affected issues:
- Resolve#1733
- Fixed#1092
- Resolve#1895
- Resolve#1965
- Partial #2260
- Partial #2099
