* feat: apis for attaching chatlogs and polls to session materials
* fix: anticipate becoming tzaware, and improve guard against attempts to provide docs for sessions that have no official timeslot assignment.
* fix: get chatlog upload to actually work
Modifications to several initial implementation decisions.
Updates to the fixtures.
* fix: test polls upload
Refactored test to reduce duplicate code
* fix: allow api keys to be created for the new endpoints
* feat: add ability to view chatlog and polls documents. Show links in session materials.
* fix: commit new template
* fix: typo in migration signatures
* feat: add main doc page handling for polls. Improve tests.
* feat: chat log vue component + embedded vue loader
* feat: render polls using Vue
* fix: address pug syntax review comments from Nick.
* fix: repair remaining mention of chat log from copymunging
* fix: use double-quotes in html attributes
* fix: provide missing choices update migration
* test: silence html validator empty attr warnings
* test: fix test_runner config
* fix: locate session when looking at a dochistory object for polls or chatlog
Co-authored-by: Nicolas Giard <github@ngpixel.com>
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