Sync loggers and handlers from Horizon upstream

In order to prevent too verbose logging, use recommended
patterns from upstream examples
https://github.com/openstack/horizon/blob/2014.1.1/openstack_dashboard/local/local_settings.py.example

Closes-bug: #1330825

Change-Id: Ie93816388d2bb97d6543c3452398ec15e5c8fd31
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>