Now the 'from' parameter can be defined in settings file

One 'problem' we found the using Cabot is that we need other 'from' different that -10minute. 

This change made possible to define the from for the request in the settings but is compatible with the -10minute policy by default.

Despite you need another value, if think is better to define this parameter in the configuration than hardcoded in the request.

Also i have remove unused elements from the file.