[BUG][1.2.15beta] Double Movement

[cothyso]

- the green light shade picked up for the previous partial parts of the movement path is not so fortunate (doesn't look so ok against the light grey movement area)
- retracing the same path than the one from the previous partial parts of the movement makes the green like color disappear and old light grey colour will be used instead, making a 3rd partial movement will make the light green color of the previous partial path to be used again
- sometimes, when using the full normal movement allowed hexes for the first move of an allowed double move, the movement stops there (ie you can't use the extra movement hexes from the double move anymore) (happened only once, couldn't reproduce it)