diff --git a/cps/templates/shelf.html b/cps/templates/shelf.html
index d70383ff..28cd20bb 100644
--- a/cps/templates/shelf.html
+++ b/cps/templates/shelf.html
@@ -4,9 +4,9 @@
   <h2>{{title}}</h2>
   {% if g.user.is_authenticated %}
     {% if (g.user.role_edit_shelfs() and shelf.is_public ) or not shelf.is_public  %}
-      <div data-toggle="modal" data-target="#DeleteShelfDialog" class="btn btn-danger">{{ _('Delete this Shelf') }} </div>
-      <a href="{{ url_for('edit_shelf', shelf_id=shelf.id) }}" class="btn btn-primary">{{ _('Edit Shelf') }} </a>
-      <a href="{{ url_for('order_shelf', shelf_id=shelf.id) }}" class="btn btn-primary">{{ _('Change order') }} </a>
+      <div id="delete_shelf" data-toggle="modal" data-target="#DeleteShelfDialog" class="btn btn-danger">{{ _('Delete this Shelf') }} </div>
+      <a id="edit_shelf" href="{{ url_for('edit_shelf', shelf_id=shelf.id) }}" class="btn btn-primary">{{ _('Edit Shelf') }} </a>
+      <a id="order_shelf" href="{{ url_for('order_shelf', shelf_id=shelf.id) }}" class="btn btn-primary">{{ _('Change order') }} </a>
     {% endif %}
   {% endif %}
   <div class="row">
@@ -14,11 +14,13 @@
     {% for entry in entries %}
     <div class="col-sm-3 col-lg-2 col-xs-6 book">
       <div class="cover">
-        {% if entry.has_cover is defined %}
-          <a href="{{ url_for('show_book', book_id=entry.id) }}" data-toggle="modal" data-target="#bookDetailsModal" data-remote="false">
-            <img src="{{ url_for('get_cover', cover_path=entry.path.replace('\\','/')) }}" />
-          </a>
-        {% endif %}
+            <a href="{{ url_for('show_book', book_id=entry.id) }}" data-toggle="modal" data-target="#bookDetailsModal" data-remote="false">
+            {% if entry.has_cover %}
+              <img src="{{ url_for('get_cover', cover_path=entry.path.replace('\\','/')) }}" alt="{{ entry.title }}" />
+            {% else %}
+              <img src="{{ url_for('static', filename='generic_cover.jpg') }}" alt="{{ entry.title }}" />
+            {% endif %}
+            </a>
       </div>
       <div class="meta">
         <p class="title">{{entry.title|shortentitle}}</p>
@@ -56,7 +58,7 @@
       <div class="modal-body text-center">
         <span>{{_('Shelf will be lost for everybody and forever!')}}</span>
           <p></p>
-        <a href="{{ url_for('delete_shelf', shelf_id=shelf.id) }}" class="btn btn-danger">{{_('Ok')}}</a>
+        <a id="confirm" href="{{ url_for('delete_shelf', shelf_id=shelf.id) }}" class="btn btn-danger">{{_('Ok')}}</a>
         <button type="button" class="btn btn-default" data-dismiss="modal">{{_('Back')}}</button>
       </div>
     </div>
diff --git a/cps/web.py b/cps/web.py
index 9b56b926..5de0a730 100644
--- a/cps/web.py
+++ b/cps/web.py
@@ -2419,18 +2419,22 @@ def add_to_shelf(shelf_id, book_id):
     if shelf is None:
         app.logger.info("Invalid shelf specified")
         if not request.is_xhr:
+            flash(_(u"Invalid shelf specified"), category="error")
             return redirect(url_for('index'))
         return "Invalid shelf specified", 400
 
     if not shelf.is_public and not shelf.user_id == int(current_user.id):
         app.logger.info("Sorry you are not allowed to add a book to the the shelf: %s" % shelf.name)
         if not request.is_xhr:
+            flash(_(u"Sorry you are not allowed to add a book to the the shelf: %(shelfname)s", shelfname=shelf.name),
+                  category="error")
             return redirect(url_for('index'))
         return "Sorry you are not allowed to add a book to the the shelf: %s" % shelf.name, 403
 
     if shelf.is_public and not current_user.role_edit_shelfs():
         app.logger.info("User is not allowed to edit public shelves")
         if not request.is_xhr:
+            flash(_(u"You are not allowed to edit public shelves"), category="error")
             return redirect(url_for('index'))
         return "User is not allowed to edit public shelves", 403
 
@@ -2439,6 +2443,7 @@ def add_to_shelf(shelf_id, book_id):
     if book_in_shelf:
         app.logger.info("Book is already part of the shelf: %s" % shelf.name)
         if not request.is_xhr:
+            flash(_(u"Book is already part of the shelf: %(shelfname)s", shelfname=shelf.name), category="error")
             return redirect(url_for('index'))
         return "Book is already part of the shelf: %s" % shelf.name, 400
 
@@ -2453,7 +2458,10 @@ def add_to_shelf(shelf_id, book_id):
     ub.session.commit()
     if not request.is_xhr:
         flash(_(u"Book has been added to shelf: %(sname)s", sname=shelf.name), category="success")
-        return redirect(request.environ["HTTP_REFERER"])
+        if "HTTP_REFERER" in request.environ:
+            return redirect(request.environ["HTTP_REFERER"])
+        else:
+            return redirect(url_for('index'))
     return "", 204
 
 
@@ -3109,6 +3117,11 @@ def new_user():
             content.sidebar_view += ub.SIDEBAR_AUTHOR
         if "show_detail_random" in to_save:
             content.sidebar_view += ub.DETAIL_RANDOM
+        if "show_sorted" in to_save:
+            content.sidebar_view += ub.SIDEBAR_SORTED
+        if "show_recent" in to_save:
+            content.sidebar_view += ub.SIDEBAR_RECENT
+
         content.role = 0
         if "admin_role" in to_save:
             content.role = content.role + ub.ROLE_ADMIN