Django-adminactions

* drop support Django 2.x
* added support to django 4 and python 3.10
* added portugues translations
* optimized extra permission creation
* mass_update_hints is now empty by default
* minor perms refactoring

* permission refactoring
* new AdminActionPermMixin to easily filter out not allowed actions from the list

* Add GitHub Actions / lint

* add new configuration settings.AA_PERMISSION_HANDLER to customise how to create extra permissions

* Drop support Django < 2.2
* change create_extra_permission to be executed after all other migrations
* add `create_extra_permission` to handle situaations where permissions are not created for all models

* Drop support Django < 2.2
* Official Django 3.2 support
* Official Django 3.1 support
* Official python 3.8 and 3.9 support
* MassUpdate: add new settings configuration `UPDATE_ACTION_IGNORED_FIELDS`. (thanks PetrKudy)
* Merge: add new settings configuration `MERGE_ACTION_IGNORED_FIELDS`. (thanks PetrKudy)
* change create_extra_permission to be executed after all other migrations
* add `create_extra_permission` to handle situaations where permissions are not created for all models