viewer: expose hidden IP list; fix hide-ip env duplication

viewer.py

@@ -237,7 +237,8 @@ class Handler(http.server.BaseHTTPRequestHandler):
                     break
         page_rows = rows[page * size:(page + 1) * size]
         body = json.dumps({'events': page_rows, 'scanned': scanned, 'page': page, 'size': size,
-                           'has_more': len(rows) >= need, 'hidden': len(hidden)}, ensure_ascii=True).encode()
+                           'has_more': len(rows) >= need, 'hidden': len(hidden),
+                           'hidden_ips': sorted(hidden)}, ensure_ascii=True).encode()
         self.send(200, body, 'application/json', (('Content-Disposition', 'inline'),))
 
     def artifact(self, sha, query):