Ticket #3084: (dlg_init): fix order of messages sent to widgets during dialog initialization.

If checkbox is the first focusable widget in a dialog, it taken the MSG_DRAW
message after MSG_FOCUS one and therefore wasn't highlighted.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
Merge branch '3084_dlg_highlight_first_widget'

* 3084_dlg_highlight_first_widget:
  Ticket #3084: (dlg_init): fix order of messages sent to widgets during dialog initialization.