Project ontology should support upload files.

[hunterhector]

Is your feature request related to a problem? Please describe.
Currently, the project ontology is created by typing in a text box. This is not the convenient way to do this. The better alternative should allow the user to directly upload the file.

Describe the solution you'd like
An upload box, preferably drag'n'drop box should be there for uploading the ontology. It should also check if the ontology is valid (at least check for MIME type). User can preview the uploaded ontology.

Describe alternatives you've considered
Upload should be the best option.

Additional context
Currently, ontology is uploaded using the following text box.