Rails4 on YAY

Running on Heroku: http://codetriage-staging.herokuapp.com/

Side Note: something funky happened with capybara and we're not getting a ton of failures :( but the site looks like it works fine.
Mirror the Gemfile's Ruby version in the CI configuration.
Update read me, remove debugging from tests
fix routes
Fixed all erros and failures caused by strong parameters feature in Rails 4
Fixed all errors with duplicate columns. Now test database can successfully created on Travis
All tests passing with Rails 4

- @user.public is never used in the codebase but @user.public? is used
  at 2 places. So renamed instance level 'public' method to 'public?'
  method
- By changing "public" scope to a class level method passes the test which is surprising
fix preview link builder
Close #142

When someone visits `resque/resque` the route was being intercepted by the admin web interface for Resque that was mounted at `resque/`. This fixes the issue.
bump excon
update git_hub_bub to be compliant with Github API

Github decided to randomly change the API requirements :(

See: https://github.com/geemus/excon/issues/249#issuecomment-21002566 for more info
better delete account flow
Use user_url to generate absolute path to user's profile in codetriage

- @user generated relative path `/users/:id`. We need absolute path,
  as this is going to be in the email
Rails4 on YAY

Running on Heroku: http://codetriage-staging.herokuapp.com/

Side Note: something funky happened with capybara and we're not getting a ton of failures :( but the site looks like it works fine.
fix routes