Support for EPUB web (local) storage #266
Description
Currently the local storage is disabled for the web views used in the EPUB navigator. Which means that a book cannot save data between two sessions.
Should we support this? If yes, we need to address the origin problem to avoid security issues. The pending PR replacing the HTTP server could help with this, as we can provide any base domain. Right now all publications are served under https://readium/, but we could use a sub-domain using an app-provided stable publication ID, such as https://93b90f0e-22ed-11ed-861d-0242ac120002.readium/.