Add endpoints for key regeneration

Enpoints are:

    POST /repos/:id/key

and

    POST /repos/:owner/:name/key

Both versions will replace current ssl key for given repo with the new
one.
trigger redirect
Add metriks.
Hook up activerecord metrics log subscriber.
Bump travis-sidekiqs.
rewrite post message login
simplify popup check
Use unicorn.rb config, sans prefork for now.
Merge branch 'master' into rkh-better-login
post data for targets we know
fix regex
set content type
Addressable::URI.parse might return nil
set action and method
no inspect
cheap escape
fix setTimeout
only send user payload
that did not work
Merge pull request #27 from travis-ci/rkh-better-login

better login