Collection blurbs don't update when owner or moderator changes their username or pseud

Description

Steps to reproduce

Example 1: A collection owner changes their username
1. Log in
2. Browse > Collections > New Collection
3. Fill in required information
4. Press "Submit"
5. Browse > Collections
6. Behold! There is your collection. (This step is important. It makes sure your collection's blurb gets cached. If no one looks at the blurb, it doesn't get cached, and the bug won't happen.)
7. Hi, username! > My Preferences > Change My User Name
8. Fill in required information
9. Press "Change User Name"
10. Press "OK" to confirm the name change
11. Follow the "Collections" link in your sidebar
12. Note that all of the collection blurbs still have your old name
13. Browse > Collections
14. Locate your collection(s) and note that they still have your old name in the blurb

Example 2: A collection owner changes their pseud
1. Log in
2. Hi, username! > My Preferences > Manage My Pseuds > New Pseud
3. Fill in the "Name" field with a name for your pseud, e.g. Pseud To Change
4. Press "Create"
5. Browse > Collections > New Collection
6. For "Owner pseud(s)," choose Pseud To Change
7. Fill in required information
8. Press "Submit"
9. Browse > Collections
10. Behold! There is your collection. (This step is important. It makes sure your collection's blurb gets cached. If no one looks at the blurb, it doesn't get cached, and the bug won't happen.)
11. Hi, username! > My Preferences > Manage My Pseuds
12. Under Pseud To Change, follow "Edit"
13. Fill in "Name" with something different, e.g. Changed Pseud
14. Press "Update"
15. Follow the "Collections" link in your sidebar
16. Note that all of the collection blurbs still have your old pseud
17. Browse > Collections
18. Locate your collection(s) and note that they still have your old pseud in the blurb

Example 3: A collection owner deletes their pseud
1. Follow steps 1-11 from Example 2
2. Under Pseud to Change, follow "Delete"
3. Press "OK" to confirm
4. Follow steps 15-18 from Example 2

What should happen

The user name in the collection blurb should be updated as soon as possible.

Notes

This bug also happens with collection moderators who change their username, change their pseud, or delete their pseud. To add a moderator to a collection:

1. Log in as the user you want to own the collection
2. Create a collection
3. Follow the "Membership" link on the collection's page (e.g. http://test.ao3.org/collections/COLLECTION)
4. In the field below the "Members of Collection Title" heading, enter the username and/or pseud of the other account you are testing with
5. Press "Submit"
6. Across from the name of the user you added, set the select menu to "Moderator"
7. Press update

The name listed on the collection's profile page does seem to update just fine for both pseud and username changes.

Assignee

Unassigned

Reporter

Sarken

Roadmap

Collections
Pseuds
Users

Priority

Medium

Affects versions

Fix versions

None

Components

Caching

Difficulty

Medium

Epic Link

Milestone

Internal 0.9