Fix a lot of bug in "source" field:

- missing creation table
- autoselect when creating order from proposal
- do not show proposal as origin when creating proposal
- use code instead of id
- use label in english
Also renamed table demand_reason into input_reason to match other table input_method.

htdocs/langs/en_US/dict.lang

@@ -287,3 +287,12 @@ CurrencyXOF=CFA Francs BCEAO
 CurrencySingXOF=CFA Franc BCEAO
 CurrencyXPF=CFP Francs
 CurrencySingXPF=CFP Franc
+
+#### Input reasons #####
+DemandReasonTypeSRC_INTE=Internet
+DemandReasonTypeSRC_CAMP_MAIL=Mailing campaign
+DemandReasonTypeSRC_CAMP_EMAIL=EMailing campaign
+DemandReasonTypeSRC_CAMP_PHO=Phone campaign
+DemandReasonTypeSRC_CAMP_FAX=Fax campaign
+DemandReasonTypeSRC_COMM=Commercial contact
+DemandReasonTypeSRC_SHOP=Shop contact
\ No newline at end of file

htdocs/langs/fr_FR/dict.lang

@@ -291,3 +291,12 @@ CurrencyXOF=Francs CFA BCEAO
 CurrencySingXOF=Franc CFA BCEAO
 CurrencyXPF=Francs CFP
 CurrencySingXPF=Franc CFP
+
+#### Input reasons #####
+DemandReasonTypeSRC_INTE=Internet
+DemandReasonTypeSRC_CAMP_MAIL=Campagne Publipostage
+DemandReasonTypeSRC_CAMP_EMAIL=Campagne EMailing
+DemandReasonTypeSRC_CAMP_PHO=Campagne Téléphonique
+DemandReasonTypeSRC_CAMP_FAX=Campagne Fax
+DemandReasonTypeSRC_COMM=Contact commercial
+DemandReasonTypeSRC_SHOP=Contact en magazin