How to change default language

1. Rename cs to en and en to cs in zeroadmin
2. Go through files and modify:
   • /app/repository/BaseRepository.php                    -> lang's ID exchange
   • /app/router/RouterFactory.php                              -> bottom condition, change cs to en
   • /app/presenters/Front/Trait/Translator.php    -> lang's ID exchange
   • /app/config/config.neon                                          -> change translations:default to en
   •  
3. And finally just search for ‘cs’ and what is related to lang rewrite to the desired language

If it is done at the beginning, I think it is enough to change it in the Router and in the config and it would be OK.