Merge branch 'develop' of https://github.com/Dolibarr/dolibarr.git into...

dev/initdata/generate-invoice.php

dev/initdata/generate-order.php

dev/initdata/generate-proposal.php

dev/initdemo/mysqldump_dolibarr_5.0.0.sql

htdocs/accountancy/bookkeeping/balance.php

htdocs/accountancy/index.php

htdocs/admin/multicurrency.php

htdocs/admin/system/about.php

htdocs/admin/system/dolibarr.php

htdocs/admin/tools/update.php

htdocs/comm/action/index.php

htdocs/comm/propal/list.php

htdocs/commande/card.php

htdocs/compta/index.php

htdocs/compta/paiement/card.php

htdocs/contact/list.php

htdocs/core/class/commoninvoice.class.php

htdocs/core/class/discount.class.php

htdocs/core/class/html.formmail.class.php

htdocs/core/lib/admin.lib.php