- add new authors and contributors only by unique email addresses
- allow multiple file upload
- added validation rule for validating length of uploaded files
- modified Dockerfile for starting "bin/server.js" instead of *server.js"
- npm updates
- 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
