update jQuery grid plugin : 4.4.1.
move translation files under i18n directory.
add jquery-json Plugin 2.4.
add RequireJS 2.1.2.
update renderjs : rev b30668ded565234de3e72bf0f4f9919c4ccf1d5b.
* add minified version
* now depend on jquery on erp5_jquery_plugin_json instead of erp5_jquery_plugin_jstorage.