Do not log uninteresting events

[emmachughes]

Laravel has a logger implementing PSR-3 which defines the info logging level as:

/**
 * Interesting events.
 *
 * Example: User logs in, SQL logs.
 *
 * @param string $message
 * @param array $context
 * @return void
 */
public function info($message, array $context = array());

Yet, Content Author logs with this level what is indisputably not an interesting event: that nothing happened. This happens every minute, filling the logs with useless information.

To fix this, the level is adjusted to debug, and the minimum logging level for the stderr handler is set to info.