Dependency on https://github.com/MasterCloudApps-Projects/your-race/issues/31 Acceptance criteria: Manage Race - [ ] A race can be created/updated only by an organizer. - [ ] An organizer can provide the allowed threshold for maximum concurrent requests. Get Races: - [ ] An athlete can get the list of all races. - [ ] An athlete can get the list of races not celebrated yet. Each race will be shown with the following data: - [ ] If the athlete has applied to the race: Applied (Yes/No), ApplicationCode. - [ ] If the athlete has been registered to the race: Registered (Yes/No), dorsal.