Add a button to toggle between normal and "diplomacy" colors.
Reviewed by: elexis
Comments by: leper, ffffffff, Stan
Fixes: #4747
This was SVN commit r21107.
Since the component initialization order is the alphabetic filename
order and
since the RangeOverlayRenderer < Player < Selectable, the new file in
that commit introduced the issue.
Similar to 36b315ca32, refs #4632.
UpdateColor function taken from temple's D754
This was SVN commit r20963.
This also allows non-selectable entities like building previews to cast
range visualizations.
Patch By: Sandarac
Differential Revision: https://code.wildfiregames.com/D555
Refs #3915, #4349, ee5bb1fd61 / D238.
Comments By: Vladislav
This was SVN commit r20622.