Fix for #1199 (missing referrer)

cps/shelf.py

@@ -179,7 +179,10 @@ def remove_from_shelf(shelf_id, book_id):
 
         if not xhr:
             flash(_(u"Book has been removed from shelf: %(sname)s", sname=shelf.name), category="success")
+            if "HTTP_REFERER" in request.environ:
                 return redirect(request.environ["HTTP_REFERER"])
+            else:
+                return redirect(url_for('web.index'))
         return "", 204
     else:
         log.error("User %s not allowed to remove a book from %s", current_user, shelf)

cps/web.py

@@ -1067,7 +1067,10 @@ def send_to_kindle(book_id, book_format, convert):
             flash(_(u"There was an error sending this book: %(res)s", res=result), category="error")
     else:
         flash(_(u"Please configure your kindle e-mail address first..."), category="error")
+    if "HTTP_REFERER" in request.environ:
         return redirect(request.environ["HTTP_REFERER"])
+    else:
+        return redirect(url_for('web.index'))
 
 
 # ################################### Login Logout ##################################################################