Window tab behavior

[GoogleCodeExporter]

(Confirmed in MDI mode, have not checked SDI):

When a window is closed, the last windows that were open underneith that window 
(for instance, a channel window under a window with a private message chat with 
a user) are not necessarily the ones that gain focus; instead, the windows to 
the furthest right in the window tab bar are opened and get focus if they have 
not been minimized.

Also, CTRL+TABing does not cycle to the next open window if there is a window 
that is minimized in the TAB path between the last active window and the next 
window to be cycled to.

Original issue reported on code.google.com by [email protected] on 4 Jan 2013 at 6:58