Update PT-BR

Translated:
setting_force_default_language_for_anonymous: Force default language for anonymous
    users
  setting_force_default_language_for_loggedin: Force default language for logged-in
    users
  label_custom_field_select_type: Select the type of object to which the custom field
    is to be attached
  label_issue_assigned_to_updated: Assignee updated
  label_check_for_updates: Check for updates
  label_latest_compatible_version: Latest compatible version
  label_unknown_plugin: Unknown plugin
  label_radio_buttons: radio buttons
  label_group_anonymous: Anonymous users
  label_group_non_member: Non member users