Merge branch 'api-fixes' into 'Milestone-2'

Api/Controllers/EventCommentController.cs

Api/Controllers/EventController.cs

Api/Controllers/EventParticipantController.cs

Api/Controllers/LocationController.cs

Api/Controllers/RestaurantController.cs

Api/Controllers/ReviewAggregateResultController.cs

Api/Controllers/ReviewCommentController.cs

Api/Controllers/ReviewController.cs

Api/Controllers/UserController.cs

Api/Models/Converter.cs

Api/Models/Event/EventInfoModel.cs

Api/Models/EventComment/EventCommentModel.cs

Api/Models/Restaurant/RestaurantDetailModel.cs

Api/Models/Restaurant/RestaurantModel.cs

Api/Models/Review/ReviewDetailModel.cs

Api/Models/Review/ReviewModel.cs

Api/Models/User/UserModel.cs

BusinessLayer/DTOs/Event/EventCreateDTO.cs

BusinessLayer/DTOs/Event/EventDTO.cs

BusinessLayer/DTOs/Event/EventInfoDTO.cs