Allow org name change in DISABLE_LOCAL_USER_MANAGEMENT mode

Fixes 500 on organization name change in DISABLE_LOCAL_USER_MANAGEMENT mode.

Fixes: eca3563
Author-Change-Id: IB#1105051

Author: pboguslawski

models/user.go

@@ -1129,7 +1129,7 @@ func checkDupEmail(e Engine, u *User) error {
 // updateUserAllowed is used to block updating selected user fields when local user managemement is disabled.
 func updateUserAllowed(u *User) error {
 	// Don't allow changes of selected user fields if local user management is disabled.
-	if setting.Service.DisableLocalUserManagement {
+	if setting.Service.DisableLocalUserManagement && (u.Type == UserTypeIndividual) {
 		if currUser, err := GetUserByID(u.ID); err == nil {
 			if currUser.Name != u.Name {
 				return fmt.Errorf("cannot change user %s username; local user management disabled", u.Name)