Inconsistent behavior when closing buddy list

[Casey Harkins]

There are currently two different behaviors when closing the buddy list: 
  hide the buddy list if the tray icon is visible, otherwise exit 
pidgin. If the tray icon is turned off entirely or turned on entirely, 
this isn't a huge problem. I am concerned with the inconsistency when 
the tray icon is set to display only when there is an unread message. 
Sometimes closing the buddy list will exit, other times it will hide.

I'm proposing that we always exit pidgin when the buddy list is closed, 
regardless of whether the tray icon is visible or not. Separately, a 
plugin or preference could be added to "minimize to tray". This 
plugin/pref would capture the minimization of the buddy list (rather 
than the closing) and hide it, showing the tray icon if it is not 
currently visible.

I've thought about this before, but this recently came up in a Redhat 
bug report[1].

Thoughts?

-casey

[1] https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=244433