keep worker IP, user contact info private even when public_worker=true

If the user wants to make their contact info public, they can include it in
the info field, but the docs explicitly say that the IP address is privileged,
and don't mention it being made available based on public_worker field.

Author: Efreak

horde/classes/base/worker.py

@@ -472,6 +472,7 @@ def get_details(self, details_privilege=0):
             ret_dict["suspicious"] = len(self.suspicions)
         if details_privilege >= 1 or self.user.public_workers:
             ret_dict["owner"] = self.user.get_unique_alias()
+        if details_privilege >= 1:
             ret_dict["ipaddr"] = self.ipaddr
             ret_dict["contact"] = self.user.contact
         return ret_dict