Merge one_window branch

Merged revisions 9143,9145-9155,9157-9162,9164-9169,9171-9177 via svnmerge from
svn://88.191.11.156/gajim/branches/one_window

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  r9145 | nicfit | 2007-12-13 21:49:09 -0700 (Thu, 13 Dec 2007) | 2 lines

  Implemented the original Nikos patch with an HPaned instead of a HBox and only do this mode when one_message_window == 'always'
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  r9152 | nicfit | 2007-12-15 13:33:56 -0700 (Sat, 15 Dec 2007) | 2 lines

  Added config and GUI for one_message_window_with_roster
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  r9153 | nicfit | 2007-12-15 13:41:46 -0700 (Sat, 15 Dec 2007) | 2 lines

  Use one_message_window_with_roster and some whitespace cleanup
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  r9154 | nicfit | 2007-12-15 14:04:49 -0700 (Sat, 15 Dec 2007) | 2 lines

  Scratch the chckbox for with roster mode, use one_message_window opt and combo
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  r9155 | nicfit | 2007-12-15 17:01:13 -0700 (Sat, 15 Dec 2007) | 2 lines

  MessageWindowMgr knows about ONE_MESSAGE_WINDOW_ALWAYS_WITH_ROSTER and MessageWindow can reparent itself rather then the roster having to do so.
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  r9157 | nicfit | 2007-12-15 17:47:20 -0700 (Sat, 15 Dec 2007) | 2 lines

  Resizing fixes and make the roster window shrink when last tab is removed
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  r9158 | nicfit | 2007-12-15 19:15:11 -0700 (Sat, 15 Dec 2007) | 2 lines

  Added "Show roster" (CTRL+R) to view menu when using always_with_roster to quickly hide/show the roster.
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  r9159 | nicfit | 2007-12-15 19:49:30 -0700 (Sat, 15 Dec 2007) | 2 lines

  Handle window title setting in always_with_roster mode.
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  r9160 | nicfit | 2007-12-15 20:13:57 -0700 (Sat, 15 Dec 2007) | 2 lines

  Removed FIXME
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  r9167 | nicfit | 2007-12-17 18:40:59 -0700 (Mon, 17 Dec 2007) | 2 lines

  When roster is hidden, show it when the number of MessageWindow controls == 0
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  r9168 | nicfit | 2007-12-17 19:07:49 -0700 (Mon, 17 Dec 2007) | 2 lines

  Disable hiding roster when there are no message controls open
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  r9169 | nicfit | 2007-12-17 20:41:11 -0700 (Mon, 17 Dec 2007) | 2 lines

  Bunch of saved size bugs fixed
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