Handle optionnal flags

admin/sync/exercice_defines.go

@@ -43,7 +43,8 @@ type ExerciceFlag struct {
 	SortReGroups  bool   `toml:"sort_validator_regexp_groups,omitempty"`
 	Placeholder   string `toml:",omitempty"`
 	Help          string `toml:",omitempty"`
-	ChoicesCost   int64  `toml:"choices_cost,omitempty"`
+	BonusGain     int32  `toml:"bonus_gain,omitempty"`
+	ChoicesCost   int32  `toml:"choices_cost,omitempty"`
 	Choice        []ExerciceFlagChoice
 	LockedFile    []ExerciceUnlockFile `toml:"unlock_file,omitempty"`
 	NeedFlag      []ExerciceDependency `toml:"need_flag,omitempty"`

admin/sync/exercice_keys.go

@@ -170,6 +170,7 @@ func buildKeyFlag(exercice *fic.Exercice, flag ExerciceFlag, flagline int, defau
 		SortReGroups:    flag.SortReGroups,
 		Checksum:        hashedFlag[:],
 		ChoicesCost:     flag.ChoicesCost,
+		BonusGain:       flag.BonusGain,
 	})
 	f = &fl