* Added snmp_max_oid config at Os level.
* Added check for snmpv1 on multi_oid requests.
* Check device_oid_limit on multi get
* Use array_chunk
* Update snmp.inc.php
* remove dump, unused variable and extra plodes
* per device settings should take priority over OS
* Update Settings.md
* don't discard the data :P
Changed some values to be explicitly boolean
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