[781] publish edit a courses visa sponsorship application deadline

[elceebee]

Context

We have already added the create flow for including an application deadline for those candidate requiring sponsorship. This PR adds the edit flow.

Changes proposed in this pull request

• Edit / update actions to the controllers, along with associated views
• Updates to the date validation after content review -- this impacts both edit / create flows.
• Changes to the success messages after content review

One of the complications in this flow is that there are 4 ways to get to the point of changing the date:

1. funding_type -> visa_sponsorship -> deadline_required -> deadline
2. visa_sponsorship -> deadline_required -> deadline
3. deadline_required -> deadline
4. deadline

So the success messages need to be aware of where the user entered the journey. so an origin needs to be passed around.

Video

Editing.visa.sponsorship.mov

Guidance to review

Unfortunately, can't deploy a review app. But editing funding type, visa sponsorship and deadlines in various scenarios would be very helpful. You'll need to activate the feature flag visa_sponsorship_deadline .

Checklist

• I have moved hard-coded strings to locale files.
• I have removed the usage of data-qa attributes in HTML files and updated the corresponding tests.

[github-actions]

Deployments

App	URL
Publish	https://publish-review-5120.test.teacherservices.cloud
Find	https://find-review-5120.test.teacherservices.cloud

[elceebee]

Publish: Edit a course's visa sponsorship application deadline

[inulty-dfe]

Nice work, juggling the origin is tricky and doesn't immediately appear to be an elegant way of doing it.

I've made some comments and questions

[inulty-dfe]

Last review, done enought here I think.

Apart from comments, I think we can change the messages back to how they are formatted in the rest of the update actions

Subjects updated
Visa sponsorship updated

[inulty-dfe]

Nice work, thanks for this 🚀