Not yet completed: this should test for all sorts of invalid
requests. Quick brainstorm:
- Invalid .put documents
- Invalid .put manifests
- .put out of sync with a .get (need ?since on put)
- Trying to access a server when it isn't logged in
- Login that has expired
- Invalid origins, missing origins
- Totally invalid .puts (e.g., put an object not a list, or put null)