* have only one eds.c context, that checks for all vcard fields with IM, and adds appropriate contacts to appropriate running context todo lists
* what happens if you, in offline mode, first delete a contact with address/bound, and then create a new contact with address/bound? it is a 50% change we will actuall add that new contact; maybe do not use handle->uid hash for deleted contacts?
* rename block to deny, with remote_deny, local_deny
