No more confirmation to save the (already saved) data when leaving the page.

First tries for a settings overlay.
When pression 'o' a pseudo-settings dialog pops up (no dialog yet). Has a reset button to reset the maze.
Using new obstacle-class for towers/obstacles. Size can be changed (2x2, 1x1, 2x1 etc)
Clicks now target the correct cell.
An offset is stored in the game-class to be able to move the board around.
The Board can be dragged around on the canvas. Will be drawn from within the mousemove event.
Clicks outside of the drawn board do not create any obstacles.