* refactor: Remove is_rfc() - test type_id instead
* fix: Guard against unknown pub_date
This should not ever come up - we have a published_rfc event for
every rfc. Should investigate fixing pub_date() to always return a val.
* fix: Fix friendly_state() for drafts in rfc state
* refactor: Change became-rfc to became_rfc for consistency
* refactor: Begin handling RFCs separatly in document_main
WIP
* chore: Hide reviews and conflict reviews for RFCs
* chore: Remove irrelevant fields from rfc doc view
* chore: Remove unused variables
* chore: Remove "Versions" field from document_rfc.html
* chore: Hide "Nits" button for RFC documents
* fix: Do not show "rev" column for rfc document history
* style: Reformat document_history() using Black
* refactor: Use "is not None" instead of "!= None"
* refactor: Convert dict() to dict literal
* fix: Migrate group, stream, and ad from draft to rfc Document
* feat: Link rfc/draft history pages
* refactor: Separately migrate DocAliases to rfc Documents
The gap in numbering is intentional, another migration will be along
shortly.
* feat: Migrate docevents onto rfc documents
* chore: Refining DocEvent migration (WIP)
* chore: Move IANA Action state change docevents to rfc docs
* chore: Fix typo
* refactor: Eliminate "created" rfc state
* chore: Leave "ballot set" comments on drafts
* fix: Enforce naming of charter docs in submit()
* style: Reformat submit() with Black
* refactor: Remove redundant check of charter name
* style: Reformat charter_with_milestones_txt with Black
* refactor: Drop canonical_name, use Path in charter_with_milestones_txt
* style: Reformat review_announcement_text() with Black
* style: Reformat action_announcement_text() with Black
* refactor: Change uses of charter.canonical_name() to charter.name
* refactor: Skip docialias when retrieving charter
* refactor: Change canonical_name() to name in utils_charter.py
* refactor: Use Path in read_charter_text()
* refactor: Drop canonical_name, minor refactor of tests_charter.py
* refactor: charter.name instead of canonical_name in milestones.py
* refactor: charter.name instead of canonical_name in tests_info.py
* refactor: Remove unused functions in ietf/secr/utils/groups.py
* refactor: charter.canonical_name -> charter.name in templates
* refactor: Remove charter handling from canonical_name
Temporarily raise an exception for testing
* refactor: Refactor get_charter_text() without canonical_name
* refactor: Remove raise when canonical_name called on a charter
* fix: Add back missing ".txt" extension
* test: Test rejection of invalid charter names
