Add application html5 offline

This applciation contains 3 BT5 (erp5_web_trade_application_ui, erp5_web_trade_application_test, erp5_web_trade_application), erp5_web_trade_application_ui contains the necessary files to run this application on browser, erp5_web_trade_application contains modules, views, workflows ... and erp5_web_trade_application_test is a test for this apllication