Remove link to thoughtbot's style guide on homepage

Having a link to thoughtbot's style guide obscures that hound is
configurable.

https://github.com/thoughtbot/hound/issues/203
https://trello.com/c/wYwsF46g
Create JobQueue to abstract queue choice
Only one JobQueue
Use Resque to process build jobs

* Retry ten times every two minutes
* Capture failures with Sentry
Add failing test
Break Resque jobs apart into modules

* Use Sentry plugin
* Run jobs synchronously when running tests
Set up Resque, again, and mount UI engine
Create initializer for redis
Use single quotes
Tell resque which redis constant to use
Replace delayed_job with resque
Create UsersController with show action
User singular user resource and update JavaScript for sync polling