UNIX time everywhere
 -> allows easy date comparision
 -> can be integrated in items id to differenciate
 between versions of the same entity for a single user
(avoiding the anoying deletion conflict in couchdb as items had
the same id)
Entities caching in a collection
attempt to persist it in localStorage with Backbone.localStorage
DRYing module methods
logXhrErr only console.warn on 404 instead of console.error
openJsonWindow transfer a windowName, doesn't appear anywhere though
- filter:visibility:reset on showPersonalInventory to fix
the case when a filter was activated and then a show:home
thus without removing filter
- removing the res.items? and res.users? test to allow the empty view
to be triggered by request returning empty
- attacking the issue with case when Persona account exist but
no User Account
+ showAccountError
-> the clue here is mainly that no cookie should be given before the user is created
- login_step_1 also triggers Persona login when call by the router