Switch to ssh agent forwarding

Also clean out mongrel cruft.
Add bundle exec as necessary for backgroundrb
Change rake to be bundler aware
Reformat file
Make bundler aware, restyle code a bit
Style changes
Make bundler aware, restyle
Clear out mongrel cruft
Restyle

Conflicts:
	config/deploy.rb
Move to run "#{sudo}" style, restyle code
Adjust rubygems in Gemfile to http, temporarily
Exclude bin from version controller