* Add buttons to show/hide results from Douban & Google
* Trigger search with "Enter" key
* Use Underscore.js template instead of build HTML strings in JavaScript
* Keep click event handler in JavaScript instead of using HTML's `onclick`
* Normalize Douban & Google results
* Update cover image & add cover URL to the form input
Since this is closer to the elements, we can be more sure that we won't have events fire when we don't want them to. For example, if we're viewing the page in a modal, we don't want the event handler living longer than the content itself.
If the HTML that's returned from the `$.get` request contains a `<script src="..."/>` tag it loads the JavaScript file via ajax, and by default it attaches a timestamp to it to bust cache. That means the file loads every time the modal is opened, and the browser treats it as a new file each time. The result is that code fires multiple times and events listeners are added multiple times.
Event and selectors appear to have been accidentally combined. The result is that typing in any input triggers a call to the `/get_matching_tags` route. We can probably limit the selector farther to only fire when `#tags` is typed into.
Requires the "goodread" module (added to optional-requirements.txt) and an API key
Retrieves Goodreads author information and displays their photo and "about" text
With them shown in a modal, you don't lose your place in the pagination. If the request comes via Ajax, the minimal layout is used. If via a normal request, the full layout is used. That lets you open the details in a new tab and have the full experience, but if you're clicking through the results of a search, you can view many without losing your place.
Added ability to reload database connection (refresh problem)
Bugfix display hot books (no hot books, hot books are deleted books, no longer result in error 500)
