throw error instead of emitting module:error
correct usage of raven
Merge pull request #5698 from guardian/remove-error-emitting

Use Raven, instead of old `module:error` message
fire resize when gallery lightbox closes
Merge branch 'master' of github.com:guardian/frontend into gallery-resize-bug

* 'master' of github.com:guardian/frontend:
  correct usage of raven
  throw error instead of emitting module:error