Merge pull request #1895 from sarken/issue_4120

4120 Expire work blurb caching so you can see the HTML changes
Issue #2264: readme

Remove ephemeral chatroom link, replace with immutable email address.
Merge pull request #1897 from CristinaRO/issue-2264-readme

Issue #2264: readme
4120 Change cache key on bookmarks and collections
4120 Tabs and quotes in bookmarks user module