Update bundled capistrano and capistrano-unicorn gems
Update deploy config to use `unicorn:restart`

* `unicorn:restart` is preferred over `unicorn:reload` when an app is configured
  to preload.
* The hostname is now `news.lvrug.org` to avoid IP address confusion.
Merge pull request #10 from gevans/master

Fixes `cap deploy` spitting out red text