* Use new fetcher implementation for post/comment
* rewrite person fetch to use new fetcher
* rewrite community to use new fetcher
* rename new_fetcher to dereference_object_id
* make ObjectId a newtype
* handle deletion in new fetcher
* rewrite apub object search to be generic
* move upsert() method out of ApubObject trait
* simplify ObjectId::new (and fix clippy)
* A first attempt at using deser-hjson. Fixes#1270
* Trying to fix tests, try 1
* Trying to fix tests, try 2
* A few fixes to deser_hjson
- Removing unwrap_or_defaults, using impl functions.
- Reorganized settings
* Make clippy happy
* hjson list strings must be quoted.
* Adding support for env vars.
* Moving to structs and defaults file.
* Moving settings default and struct.
