Changes:
-------
- Add aurweb.db.get_session()
- Returns aurweb.db's global `session` instance
- Provides us a way to change the implementation of the session
instance without interrupting user code.
- Use aurweb.db.get_session() in session API methods
- Add docstrings to session API methods
- Refactor aurweb.db.delete
- Normalize aurweb.db.delete to an alias of session.delete
- Refresh instances in places we depend on their non-PK columns
being up to date.
Signed-off-by: Kevin Morris <kevr@0cost.org>
New configuration options:
- `[ratelimit] cache`
- A boolean indicating whether we should use configured cache (1)
or database (0) for ratelimiting.
Signed-off-by: Kevin Morris <kevr@0cost.org>
