Some fixes and merge pull requests

Fixes for:

• When I change the user role, user no longer can login. The password I guess it default to blank.
• Also when you click on modify user, the user default role always shows as admin, it does not reflects the correct role.
• Please upgrade datatables-oracle to 6.0
• Reordering the menu makes the sub menu and the crud disappear. Also when editing the sub menu default back to no parent menu.

Merged pull requests:

• Sweetalert for deletion
• Roles translation for pt_BR