MDT-2029: Loading Spinner for "Current Banner" Section (Admin Only)

[karla-vm]

Description

Closes MDCT-2029.

The current /admin banner page displays “There is no current banner” if the app does not have any fetched admin banner, but if you're still waiting for that fetch to complete, the message shouldn't be displaying and should be a Loading Spinner instead.

How to test

./dev local

• Log in as adminuser@test.com
• Navigate to /admin
• Create a new banner
• Refresh the page
• Delete that banner
• Refresh the page

See the spinner spinnin'

Changed Dependencies

N/A

Code author checklist

• I have performed a self-review of my code
• I have added thorough tests
• I have added analytics, if necessary
• I have updated the documentation, if necessary

Reviewer checklist (two different people)

• I have done the deep review and verified the items in the above checklist are g2g
• I have done the lgtm review

[ntsummers1]

This works, but it leaves the spinner up after the result has come back as shown in this clip. Also, the spinners contrast is a little faint, would it be better to have it be a little darker here?

Screen.Recording.2022-10-11.at.3.07.08.PM.mov

[gmrabian]

I'm not seeing the issue Nick called out

[karla-vm]

This works, but it leaves the spinner up after the result has come back as shown in this clip. Also, the spinners contrast is a little faint, would it be better to have it be a little darker here?
Screen.Recording.2022-10-11.at.3.07.08.PM.mov

This should be fixed now 🎉 can you give it another go?

[ntsummers1]

Looks great!