EXT-7362 FIXED (World Map - make teleport button green)

Default value for button's attribute 'image_unselected' was overriden: image_unselected=\"PushButton_On\".

Reviewed by Mike Antipov at https://codereview.productengine.com/secondlife/r/399/

--HG--
branch : product-engine

indra/newview/skins/default/xui/en/floater_world_map.xml

@@ -538,6 +538,7 @@
     <button
      follows="right|bottom"
      height="23"
+     image_unselected="PushButton_On"
      label="Teleport"
      layout="topleft"
      left="25"