Merge branch 'master' into lang_update_435

inc/lang/pt/lang.php

lib/plugins/acl/lang/pt/lang.php

lib/plugins/authad/lang/pt/lang.php

lib/plugins/authad/lang/pt/settings.php

lib/plugins/authldap/lang/pt/lang.php

lib/plugins/authldap/lang/pt/settings.php

lib/plugins/authmysql/lang/pt/lang.php

lib/plugins/authmysql/lang/pt/settings.php

lib/plugins/authpgsql/lang/pt/settings.php

lib/plugins/authplain/lang/pt/lang.php

lib/plugins/config/lang/pt/lang.php

lib/plugins/extension/helper/extension.php

lib/plugins/extension/lang/pt/lang.php

lib/plugins/popularity/lang/pt/lang.php

lib/plugins/revert/lang/pt/lang.php

lib/plugins/styling/lang/pt/lang.php

lib/plugins/usermanager/lang/pt/lang.php