Merge branch '2608_widget_enhancement'

Merge branch '2608_widget_enhancement'

* 2608_widget_enhancement:
  Make menu always resizable.
  Fixed location of hotlist query dialogs.
  Added D_CENTER flag to query dialog flags
  Workaround for NCurses output routines.
  Allow draw a part of line if some coordinares are out of screen boundaries.
  Allow close help and tree dialogs using ctrl-g shortcut (SIGINT).
  Allow override standard dialog actions in some dialog.
  Don't get dialog hotkey from disabled widget.
  Fixed widget redraw order in dialog.
  Menu hack to keep overlapped widgets order
  Added dlg_set_top_widget() function
  Allow add and remove widgets in runtime.
  Put global mouse coordinates to widgets.
  Fix mouse handling in dialog.
  Ticket #2608: widget enhancements.