FIX #3195 correction on language and remove xecho

core/trunk/install/lang/fr.php

core/trunk/install/view/database_view.php

core/trunk/install/view/docservers_view.php

core/trunk/install/view/language_view.php

core/trunk/install/view/licence_view.php

core/trunk/install/view/password_view.php

core/trunk/install/view/prerequisites_view.php

core/trunk/install/view/resume_view.php

core/trunk/install/view/smtp_view.php

core/trunk/install/view/welcome_view.php