* fix: remove group owner concept
* fix: adapt e2e tests accordingly
* refactor users select to match improvement
* refactor: add user -> edit users
* feat: add edit users to group card actions
* add a few more UI improvements
* fix: edit group users icon
* improve loading behaviour
* fix group users refresh on card view
* improvement: create group form validation
* fix edit group, some refactoring
* fix: e2e tests, minor bugs
* fix: infinite re-renders due to useHiddenColumns useEffect array dependency
* fix re-rendering on useHiddenColumns for some tables
* refactor: validations into functions / variables