Fix Kibana log link
Fix Kibana log link

The upgrade from Kibana3 to Kibana4 removed the request-id dashboard
from https://logstash.wikimedia.org. With Kibana4 the full dashboard
configuration including the panels that are used and any search terms
are passed in the `_g` URL parameter.

Closes #15

wikimedia/FirefoxWikimediaDebug,wikimedia/FirefoxWikimediaDebug