* Introduce browser large object storage location.
This location is encrypted and serialized to disk in order to allow for storage of uncountable things like vault items that take a significant amount of time to prepare, but are not guaranteed to fit within session storage.
however, limit the need to write to disk is a big benefit, so _most_ things are written to storage.session instead, where things specifically flagged as large will be moved to disk-backed memory
* Store derived values in large object store for browser
* Fix AbstractMemoryStorageService implementation