CPlayerListCtrl: Don't call __super::OnTimer for our custom timer.

Also ensure the correct timer ID is used.

It shouldn't matter in our case but in general it seems safer to do this way (see http://support.microsoft.com/kb/200054/en-us).
Keys page: Cosmetics.

- Give some functions a clearer name.
- Reduce the visibility of some member functions and variables.
CWnd::(Set|Kill)Timer: Ensure the timer ID is always correct.

SetTimer can return a different timer ID than the one suggested.