Prevent the notices (login failed, login successul,etc.) form piling up. All notices now cleared when we change state. We'll probably abandon this stackable-notice thing soon, and overhaul how we give notices to the user, but for now, this at least gets them out of the way.
After successful login, logout, & sign in, send back to home.
Merge pull request #7 from JohnThomson/feature/AllBooksNoSearch

Get books only one page at a time (previously we pulled down the whole collection from Parse). Filtering currently disabled.
Merge pull request #8 from JohnThomson/feature/AllBooksSearch

Feature/all books search
Merge pull request #6 from hatton/feature/gohome

After successful login or logout, send back to home.
Merge pull request #5 from hatton/feature/clearNotices

Prevent the notices (login failed, login successul,etc.) form piling up....