Board: Resize board/background

[kanarelo]

As it is, once created, I am not sure if we can update the dimensions of the board.

We may need editor.board.rescale() to be allowed to take arguments.

This may affect the background, so, the background (image & overlay) should also be resized to the new dimensions. Although, the background should be stretched to fit into the new background.

• User should be able to choose whether to crop the background image, or stretch to fit/fill canvas.

[raminious]

this is more complicated. everything including created shapes and paths should recalculate. currently you can resize the board through editor.board.stage

[kanarelo]

I agree... I have had some time to think about this, and I think you are right... And it might introduce new bugs because everything will need to be recalculated.