* feat: Add TelechatAgendaContent model and related support
* feat: Add UI for managing TelechatAgendaContents
* refactor: Rename _view view to _manage
* feat: Add a view to dump the TelechatAgendaContent as text/plain
* refactor: Point agenda_data() helpers at content in the DB
* refactor: Replace references to settings URLs/paths with new plumbing
* chore: Remove now-obsolete settings from settings.py
* feat: Link to telechat_agenda_content_manage view from iesg agenda
* fix: Use correct view name
* feat: Link from agenda content management page to IESG agenda view
* chore: Create resources
* chore: Add new names to names.json
* chore: Renumber migration after rebase
* chore: Remove unused import
* fix: Clean up partially removed code
* chore: Add admin model for TelechatAgendaContent
* chore: Simplify __str__ method for TelechatAgendaContent
* test: Add TelechatAgendaContentFactory
* test: Test the fill_in_agenda_administrivia() function
* test: Test that agenda contains action_items content
* test: Test that sensitive agenda links are restricted by role
* test: Test the telechat_agenda_content_view view
* test: Add test of telechat_agenda_content_edit view
* fix: Add type attribute to button to satisfy html validator
* test: Filter TelechatAgendaSectionName to used=True for tests
* test: More thoroughly test for likely(ish) permission errors
* fix: Fix typo in "tablist" role
* test: Test telechat_agenda_content_manage view
* style: Put back newlines at EOF
* chore: Add admin for TelechatAgendaSectionName
* chore: Renumber migrations
* fix: Depend on the correct migration
Forgot to update the number, but was also depending on the wrong
migration.
