The map tiles should be displayed according to the tile status
TO IMPLEMENT
Unvisited tiles should have a grey background - use a specific CSS class
Visited tiled should have a white (or yellow) background - use a specific CSS class
The tile row and column values should be displayed grey, smaller and in the right top corner of the tile (in order to help finding the tile on the map) - to be deleted later
The map tiles should be displayed according to the tile status
TO IMPLEMENT