Jasq FTW

Added [Jasq](https://github.com/biril/jasq) (AMD dependency injector for Jasmine). 

Should make unit testing easier (makes the specs self-contained, allows mocking of dependencies)

See example unit test that's using it -https://github.com/guardian/frontend/blob/09f38f3558ece22038d472f4647def0a446c7ca4/static/test/javascripts/spec/common/commercial/article-body-adverts.spec.js