- added API File Controller for downloading files e.g. /api/download/1022
- also create has codes by submitting new dataset
- added edit dataset functionalities for role submitter
- added the following route for role submitter: /dataset/:id/update', 'DatasetController.update'
- created extra UpdateDatasetValidator.ts for validating updated dataset
- npm updates
- added model DocumentXmlCache.ts
- npm updates
- changed all models inside app/Models to use corrected BaseModel.ts
- added extra extension class DatasetExtension.ts for app/dataset.ts for caching internal and external fields