Merge remote-tracking branch 'Upstream/3.8' into 3.8-1

dev/examples/get_contracts.php

htdocs/accountancy/admin/productaccount.php

htdocs/adherents/type.php

htdocs/compta/paiement/cheque/class/remisecheque.class.php

htdocs/core/boxes/box_members.php

htdocs/core/boxes/box_task.php

htdocs/core/modules/modAgenda.class.php

htdocs/core/modules/modHoliday.class.php

htdocs/core/modules/modUser.class.php

htdocs/expensereport/class/expensereport.class.php

htdocs/holiday/admin/holiday.php

htdocs/holiday/admin/index.html