Merge remote-tracking branch 'origin/3.6' into develop

htdocs/admin/facture.php

htdocs/commande/liste.php

htdocs/contact/list.php

htdocs/core/lib/pdf.lib.php

htdocs/core/tpl/login.tpl.php

htdocs/core/tpl/passwordforgotten.tpl.php

htdocs/fourn/facture/paiement.php

htdocs/langs/ar_SA/link.lang

htdocs/langs/bg_BG/companies.lang

htdocs/langs/bg_BG/languages.lang

htdocs/langs/bg_BG/link.lang

htdocs/langs/bs_BA/link.lang

htdocs/langs/ca_ES/link.lang

htdocs/langs/cs_CZ/link.lang

htdocs/langs/da_DK/link.lang

htdocs/langs/de_DE/link.lang

htdocs/langs/el_GR/link.lang

htdocs/langs/es_ES/admin.lang

htdocs/langs/es_ES/compta.lang

htdocs/langs/es_ES/errors.lang