Merge pull request #1612 from dokuwiki-translate/lang_update_61

inc/lang/ja/lang.php

lib/plugins/acl/lang/ja/lang.php

lib/plugins/authad/lang/ja/lang.php

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

lib/plugins/authldap/lang/ja/lang.php

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

lib/plugins/authmysql/lang/ja/lang.php

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

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

lib/plugins/authplain/lang/ja/lang.php

lib/plugins/extension/lang/ja/lang.php

lib/plugins/popularity/lang/ja/lang.php

lib/plugins/revert/lang/ja/lang.php

lib/plugins/styling/lang/ja/lang.php

lib/plugins/usermanager/lang/ja/lang.php

lib/tpl/dokuwiki/lang/ja/lang.php