Bookmark blurbs do not update when bookmarker changes their username or pseud

Description

Steps to reproduce:

Example 1: A bookmarker changes their username
1. Log in
2. Browse > Works
3. Follow a title to access a work
4. Follow "Bookmark"
5. Fill in any information as desired
6. Press "Create"
7. Hi, username! > My Bookmarks
8. Behold! There is your bookmark. (This step is important. It makes sure the bookmark blurb gets cached. If no one looks at the blurb, it doesn't get cached, and the bug won't happen.)
9. Preferences > Change My User Name
10. Fill in required information
11. Press "Change User Name"
12. Press "OK" to confirm the name change
13. Follow the "Bookmarks" link in your sidebar
14. Note that the bookmark blurb(s) still have your old name

Example 2: A bookmarker 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 > Works
6. Follow a title to access a work
7. Follow "Bookmark"
8. In the "[user] save a bookmark!" select menu, choose "Pseud To Change"
9. Press "Create"
10. Hi, username! > My Bookmarks
11. Behold! There is your bookmark. (This step is important. It makes sure the bookmark blurb gets cached. If no one looks at the blurb, it doesn't get cached, and the bug won't happen.)
12. Preferences > Manage My Pseuds
13. Under Pseud To Change, follow "Edit"
14. Fill in "Name" with something different, e.g. Changed Pseud
15. Press "Update"
16. Follow the "Bookmarks" link in your sidebar
17. Note that the bookmark blurb(s) still have your old pseud

What should happen

The username or pseud on the bookmark blurb should be updated as soon as possible.

Notes

The "short blurb" located on pages like http://test.archiveofourown.org/works/1064823/bookmarks is not cached and does update. This page is accessed by following the linked number in the "Bookmarks: #" part of a work or bookmark's stats line.

Assignee

Unassigned

Reporter

Sarken

Roadmap

Bookmarks
Pseuds
Users

Priority

Medium

Affects versions

Fix versions

None

Components

BackEnd
Caching

Difficulty

Medium

Epic Link

Milestone

Internal 0.9