That button used to be in the Tilesets view, but editing of terrain information has moved to the tileset editor mode in Tiled 1.0. See this topic:
http://discourse.mapeditor.org/t/miss-edit-terrain-information-dialog/2123
That button used to be in the Tilesets view, but editing of terrain information has moved to the tileset editor mode in Tiled 1.0. See this topic:
http://discourse.mapeditor.org/t/miss-edit-terrain-information-dialog/2123