Update to use pg/v10

lib/database/users.go

@@ -81,7 +81,8 @@ func (db *pgDB) AddRawUser(name string, hpass []byte, salt []byte, role string)
 		Salt:     salt,
 		Role:     role,
 	}
-	return db.sql.Insert(&u)
+	_, err := db.sql.Model(&u).Insert()
+	return err
 }
 
 func (db *pgDB) GetRole(name string) (string, error) {