Update changelog

ChangeLog

@@ -2,6 +2,22 @@
 English Dolibarr ChangeLog
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+***** ChangeLog for 5.0.4 compared to 5.0.3 *****
+FIX: #6880
+FIX: #6925
+FIX: #6926
+FIX: Can set supplier invoice to billed.
+FIX: Can't create invoice if PO disapproved
+FIX: contratligne update
+FIX: CVE-2017-7886
+FIX: default param
+FIX: Line of invoices not inserted when using POS module and VAT NPR.
+FIX: origin & originid on supplierproposal
+FIX: Redirect to payment page from member subscription page failed if a unique security key was defined.
+FIX: REST api to get project when user has permission to read all.
+FIX: situation_progress param default value must be 100 and not 0
+FIX: SQL injection on user/index.php parameter search_statut.
+FIX: Warnings
 
 ***** ChangeLog for 5.0.3 compared to 5.0.2 *****
 FIX: #6677 Expired contracts dashboard box does not show the name of the thirdparty