Complete rspec features menu tests

- User can search for artist
- Add artist from band container
- Artist will appear in sidebar
- User can click "X" button and artist will be removed

All tests passing!
Refactor feature specs

- Remove non-implemented test
- Fix whitespacing
Migrate client storage solution from localStorage to sessionStorage.

It is uneccessary to store band object data in a user's browser longer than one session. If the user does not sign-up/opt to receive text notifications on first visit then the user is not likely to return.
Complete band presenter jasmine spec.

- Test creation of band node for band dropdown view
- Appears after user selects an artist from auto-suggest dropdown
- All tests passing
Merge pull request #106 from spring-peepers-2014/jasmine-unit-tests

Complete test coverage on search, add, and delete artist.

Jasmine unit tests on BandPresenter, FavoritesList, FavoritesPresenter, and SearchBox
Capybara features tests on search and favorite menu.