Improved the settings: Can be moved around, sliders update value, savebutton (which does not do anything yet)
The size of the grid can be adjusted within the options. When the options are saved, the size is adjusted.
Red-PathPlates get saved and loaded correctly. Their internal order is kept.
Red Plates are now numbered and the number is displayed on the tile.
The size of the textnumbers of the red plates now adjustes to the current gridsize.
Fixed wrong number of blocked locations being read from the stored cookie.
Added a binaryheap to the project. This will be useful for the pathfinding algorithm.