Adds access to LinkedIn API (GET only)
Uses a fault-tolerant jsonp implementation
Removes unused dependency
Finally, errors are no longer blackholed in promises
Replaces services.** with settings.%TYPE% in API
Finally, errors are no longer blackholed in promises
Replaces services.** with settings.%TYPE% in API
Fixes link Identity

TODO: provide user feedback in components
Before all, check the availability of jQuery for components
Passes me to login event
Fix `events` hash usage in component

Each instance of a component has is own `events` hash.
Changelog
Adds Hull.linkIdentity and Hull.unlinkIdentity
Correctly emits events in components when linking/unlinking
Restores the emission of tracking events
Handle login error
Update CHANGELOG
Don't start interval if `window.open` does not return a window
user_cancelled -> window_closed
Merge pull request #129 from hull/feature/handle-login-error

Handle login error