Serious enhancement of expenses module

htdocs/compta/deplacement/class/deplacement.class.php

htdocs/compta/deplacement/fiche.php

htdocs/compta/deplacement/index.php

htdocs/compta/deplacement/list.php

htdocs/compta/dons/class/don.class.php

htdocs/compta/dons/index.php

htdocs/compta/index.php

htdocs/includes/menus/init_menu_auguria.sql

htdocs/includes/menus/standard/eldy.lib.php

htdocs/install/mysql/migration/3.0.0-3.1.0.sql

htdocs/install/mysql/tables/llx_don.sql

htdocs/langs/en_US/boxes.lang

htdocs/langs/en_US/trips.lang

htdocs/langs/fr_FR/boxes.lang

htdocs/langs/fr_FR/trips.lang