Stores documents and attachments, attachments accept and return Blob type.
Tests are run with mocks and if the URL containt /xwiki/bin/ then they are run on the live wiki
    (user must be logged in for them to pass).

browserlocalstorage.js removed

jio.get({"_id": "a/b"});
changed to
jio.getAttachment({"_id": "a", "_attachment": "b"});