Missing "la_error_InvalidLogin" phrase translation [5.2.2-B1]
The "la_error_InvalidLogin" phrase is used to show validation error on "Users.Username" field. When somebody is attempting to use "@" in username they see this non-translated phrase.
Solution
add "la_error_InvalidUsername" field with "The username can contain only: letters, numbers, underscores, dashes and dots" translation
use "la_error_InvalidUsername" instead of "la_error_InvalidLogin" in "users_config.php"
