telegrambot: add a polling timeout aka wait for a while

active_bots/telegrambot.py

@@ -13,9 +13,10 @@ class TelegramBot(Bot):
         seen_tg = user.get_seen_tg()
         try:
             updates = tb.get_updates(offset=seen_tg + 1,
-                                     allowed_updates="message").wait()
+                                     allowed_updates="message",
+                                     timeout=15).wait()
         except TypeError:
-            updates = tb.get_updates().wait()
+            updates = tb.get_updates(timeout=15).wait()
         reports = []
         if updates == None:
             return reports