Define virtual property 'url'
Pass story to ChaptersView as well.
Define route to chapter
@todo: Implement
Move router to global app.
Fix unable to attach events.
Get rid of empty DIV tag.
Remove `rendered` event.
Fix unable to attach event handlers.
Push story's slug and chapter number to cache.
Fetch chapter from server.
Add BaseView.
Show a chapter.
Change to extend from BaseView.
Merge branch 'page/chapter'