remove obsolete files (finally)
nw userman: fix loading from `127.0.0.1` to have one `session` && `can`
um.ctl.Login: fix login if backend has restarted

just get `id` from the model and not by smart RegExp
wes: make full cleanup in logout
um logout: cleanup `wes` with session fix
um.model.ChatUser: simplify fields
um Login + wes: fix login/logout/relogin + wait events init all together

= backend =
* um: on failed relogin (password, etc) reset online status
* wes.init: if there is `wes` in session, then check activity by `wes.id`

= UI =
* relogin: handle auth errors, allow exit via trigger[Q]
* shutdown: do not allow if auth failed or active session