Codealia IDE

[Pivotal Tracker](https://www.pivotaltracker.com/story/show/65891588)

* First iteration of the Codealia IDE
* Added Jasmine testing framework
* Added `bundle exec rake jasmine:ci` to `.travis.yml`

**Note** At the moment, only accessible through manually typing in the url: `"/code-playground"`, defined in rails as `code_playground_path`