bug 1110799: Expand raven/sentry configuration
bug 1110799: Expand raven/sentry configuration

* Send the revision hash, for release tracking
* Set a syncronous transport, which may be more compatible with meinheld
* Set the repos name, which may make tracebacks more useful
* Ignore DisallowedHost exceptions, which happen in AWS

a2sheppy/kuma,a2sheppy/kuma,SphinxKnight/kuma,SphinxKnight/kuma,mozilla/kuma,mozilla/kuma,mozilla/kuma,Elchi3/kuma,escattone/kuma,SphinxKnight/kuma,a2sheppy/kuma,mozilla/kuma,SphinxKnight/kuma,mozilla/kuma,jwhitlock/kuma,Elchi3/kuma,jwhitlock/kuma,Elchi3/kuma,a2sheppy/kuma,Elchi3/kuma,SphinxKnight/kuma,escattone/kuma,Elchi3/kuma,SphinxKnight/kuma,a2sheppy/kuma,jwhitlock/kuma,escattone/kuma,jwhitlock/kuma,jwhitlock/kuma