PEAK XOOPS - Restructuring waiting module

I've just restructured waiting module. (version 0.9)

Older:
-- plugin
-- -- module
-- -- -- module.php
-- -- -- language.lng.php
-- -- -- language.lng.php
-- -- module
-- -- -- module.php
-- -- -- language.lng.php
-- -- -- language.lng.php

Newer:
-- plugins
-- -- module.php
-- -- module.php

If you make the plugins, update "waiting" to 0.9 first, please.
And use the language constants from plugins.php instead of defining the original constants.

I believe this modification makes waiting lighter and faster