Use unless instead of `(when (null (`
** DONE Render the sync to trello routine asynchronous CLOSED: [2013-08-16 ven. 11:39] ** DONE Render the sync complex entity routine asynchronous CLOSED: [2013-08-16 ven. 11:39] This is the proxy which is in charge or updating the buffer. This way, I benefit from the asynchronous process already spawn by the proxy
** DONE Render the sync from trello asynchronous CLOSED: [2013-08-16 ven. 12:12]
** DONE Fix check setup routine
CLOSED: [2013-08-16 ven. 13:11]