D3DFS: remove horizontal margin from osd posbar

The bug with autohiding is now fixed and there's no reason to have it
there
ChildView: remove unneeded critical section
PlayerNavigationDialog: minor refactoring
PlayerListCtrl: call CWnd::OnTimer() in OnTimer()

Some mfc timers need that
Delay OnIdle() calls initiated by WM_MOUSEMOVE
NavigationBar: remember hide flag in floating mode
rctxt
wip
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