Adds Event factory, EventsListCtrl to display a list of all events.

* Adds the eventItem directive to displaying a single event inside
  a list of results.
Adds EventCtrl and single event view.
Adds EventComics factory and EventComicsCtrl
Adds EventCharacters feature

* creates EventCharacters factory to retrieve a list of characters from
  a specific event.
* creates EventCharactersCtrl and views to display a paginated list of
  characters participating in a specific event.
Adds links to Characters and Events from the CharacterCtrl view
Styling changes to make it work with a white background.