[Pidgin] #7877: Collapse/Expand all group in BuddyList

[Pidgin]

#7877: Collapse/Expand all group in BuddyList
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Reporter:  c9s    |        Type:  patch       
  Status:  new    |   Component:  pidgin (gtk)
 Version:  2.5.3  |    Keywords:              
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 - create a menu item in menubar
      - collapse all groups
      - expand all groups
  - provide collapse/expand all group functions

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Ticket URL: <http://developer.pidgin.im/ticket/7877>
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