* feature: Allow ignore_mount, ignore_mount_string, ignore_mount_regex at OS level
* Change the storage settings to override global instead of merge.
Add documentation
Saves from having to check isset() and all that junk.
Uses dot separated config paths like the database.
Usage:
Config::get('install_dir')
Config::get('memcached.enable', false)
Config::getDeviceSetting($device, 'retries', 'snmp', 5)
Config::getOsSetting($device, 'nobulk')
Config::set('poller_modules', array())
