add timeout to catalog pages

app.py

@@ -388,7 +388,7 @@ def get_catalog_page(property_id, value):
     if os.path.exists(filename):
         html = open(filename).read()
     else:
-        r = requests.get(url, headers={'User-Agent': user_agent})
+        r = requests.get(url, headers={'User-Agent': user_agent}, timeout=2)
         html = r.text
         open(filename, 'w').write(html)
 
@@ -429,6 +429,7 @@ def item_page(item_id):
     catalog_url = first_datavalue(entity, 'P973')
 
     catalog = None
+    try:
         if 'P4704' in entity['claims']:
             saam_id = first_datavalue(entity, 'P4704')
             catalog = saam.get_catalog(saam_id)
@@ -461,6 +462,8 @@ def item_page(item_id):
                     'institution': detail['label'],
                     'description': description,
                 }
+    except requests.exceptions.ReadTimeout:
+        pass
 
     return render_template('item.html',
                            qid=qid,