[Pidgin] #5649: Add "list" command for xmpp conversation

[Pidgin]

#5649: Add "list" command for xmpp conversation
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  Reporter:  nops   |       Owner:  deryni      
      Type:  patch  |      Status:  new         
  Priority:  minor  |   Milestone:              
 Component:  XMPP   |     Version:  2.4.1       
Resolution:         |    Keywords:  list command
   Pending:  0      |  
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Comment (by nops):

 deryni, about error message a think, that old message "Unknown
 affiliation:" and "Unknown role:" is good, and no more messages needed.

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Ticket URL: <http://developer.pidgin.im/ticket/5649#comment:5>
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