Adds an unread count to the sidebar.
Binds the window title to the unread count.
Implements keyboard shortcuts.
Adds a Procfile to prepare for deployment to heroku.
Clarifies engines for heroku.
Changes the port binding to support heroku.
Changes static server for heroku support.
Adds the compiled application.js so it will be deployed properly to heroku.
Minor cleanup.
Refactoring event handling and fixes defects when there is no selected item using keyboard shortcuts.