Clean useless code

modules/attachments/css/module.css

modules/attachments/fill_input.php

modules/attachments/js/functions.js

modules/attachments/lang/en.php

modules/attachments/lang/fr.php

modules/attachments/lang/nl.php

modules/attachments/manage_attachments.php

modules/attachments/show_attachments_details_tab.php

modules/attachments/show_attachments_tab.php

modules/avis/avis_simple.php

modules/avis/class/avis_controler_Abstract.php

modules/avis/css/module.css

modules/avis/difflist_avis_history_display.php

modules/avis/difflist_avis_workflow_display.php

modules/avis/getAvisModelByTitle.php

modules/avis/resetAvisWF.php

modules/avis/saveAvisWF.php

modules/avis/show_avis_tab.php

modules/avis/validate_recommendation.php

modules/avis/xml/IVS/requests_definitions.xml