Fix adding new file learning material

[jrjohnson]

We were not sending enough information to attach the file to the record.
This sends the fileHash with new learning materials

Fixes #1230

[jrjohnson]

Should be testable against demo.

[saschaben]

actually, not testable against demo, as demo doesn't allow the upload of files. needs to be tested on stage for validation.

[jrjohnson]

@saschaben I just validated as working against the demo API. Seems to allow the creation of new files. Is that something we need to fix / prevent?

[jrjohnson]

This should be tested with a small file or else wait a few seconds after uploading before clicking save. Separate ticket #1232 for handling the delay correctly.

[saschaben]

Looks good now. still throwing a 500 error when attempting to download from the calendar event detail page though (but not from the course management page).

[jrjohnson]

👍 from @saschaben. Can you create another issue for the detail download?

[saschaben]

can't recreate. nm

[thecoolestguy]

@homu r+

[homu]

📌 Commit 226e246 has been approved by thecoolestguy

[homu]

⚡ Test exempted - status