Logging is availabe since yii-user-management 0.8. All information is logged
to the loglevel 'info'. In a default Yii Application, only the loglevels
error and warning are being logged, so we need to add the info level
to the CLogRoute whereever we want user information to be written to, like
this:

	'log'=>array(
			'class'=>'CLogRouter',
			'routes'=>array(
				array(
					'class'=>'CFileLogRoute',
					'levels'=>'error, warning, info',
				),
				array(
					'class'=>'CWebLogRoute',
				),
			),



Wrong login attempts will always be logged to the log info 'error' so
a admin can get informed when too many wrong attempts are made for a 
specific user:

array(
	'class'=>'CEmailLogRoute',
	'levels'=>'error',
	'categories' => 'application.modules.user.*',
	'emails' => 'emergency_admin@example.com'
	),


If we want to log our Information to the database, we use the CDbLogRoute like this:

		array(
					'class'=>'CDbLogRoute',
					'connectionID' => 'db',
					'levels'=>'error, warning, info',
					'categories' => 'application.modules.user.*',
					'logTableName' => 'user_activities'
				), 

and possibly:
		array(
					'class'=>'CDbLogRoute',
					'connectionID' => 'db',
					'logTableName' => 'all_other_activities_including_user_activities'
				), 




