Sorting and filtering of lists working (except file formats)

Refactored and bugfixing show_cover
Refactored import of helper in web.py
Fix for displaying /me (gettext) throwing error 500
Fix get search results throwing error 500
Fix routing books_list for python2.7
Fix for "me" and "settings" pages
Update sidebarview and list view

cps/templates/book_edit.html

@@ -5,11 +5,7 @@
 
   <div class="col-sm-3 col-lg-3 col-xs-12">
     <div class="cover">
-      {% if book.has_cover %}
         <img src="{{ url_for('web.get_cover', book_id=book.id) }}" alt="{{ book.title }}"/>
-      {% else %}
-        <img src="{{ url_for('static', filename='generic_cover.jpg') }}" alt="{{ book.title }}"/>
-      {% endif %}
     </div>
 {% if g.user.role_delete_books() %}
     <div class="text-center">