Fixed the size for the operators when dragging them.
Also added the divide operation to the drawer.

Signed-off-by: Mark Kamsma <mark@markkamsma.nl>
Fixed a bug where the divide operator wouldn't draw the operands centered horizontally

Signed-off-by: Mark Kamsma <mark@markkamsma.nl>
Merged Ivor's code to change the color in different MathObject states

Signed-off-by: Mark Kamsma <mark@markkamsma.nl>
Draw aiming dots 4 life