Added editing star rating graphically

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)

cps/templates/book_edit.html

@@ -39,7 +39,7 @@
       </div>
       <div class="form-group">
         <label for="rating">{{_('Rating')}}</label>
-        <input type="number" min="0" max="5" step="1" class="form-control" name="rating" id="rating" value="{% if book.ratings %}{{book.ratings[0].rating / 2}}{% endif %}">
+        <input type="number"  name="rating" id="rating" class="rating input-lg" data-clearable="" value="{% if book.ratings %}{{(book.ratings[0].rating / 2)|int}}{% endif %}">
       </div>
       <div class="form-group">
         <label for="cover_url">{{_('Cover URL (jpg)')}}</label>
@@ -114,6 +114,7 @@
 {% block js %}
 <script src="{{ url_for('static', filename='js/libs/typeahead.bundle.js') }}"></script>
 <script src="{{ url_for('static', filename='js/edit_books.js') }}"></script>
+<script src="{{ url_for('static', filename='js/libs/bootstrap-rating-input.min.js') }}"></script>
 {% endblock %}
 {% block header %}
 <link href="{{ url_for('static', filename='css/libs/typeahead.css') }}" rel="stylesheet" media="screen">