babymatch, improve dropping tiles animation

Hey there,

Back with one small improvement (at least, this is what I think :D). I have noticed, in the Paintings activity that dropping tiles could be a bit strange: when releasing the tile, it could warp at a different place, then smoothly go where it is attended.

I think I have improved on this, by doing a smooth animation from the released position to the the target (no more warping). Also, I have added animation of the tile size, for more elegant integration of the tile with its target place.

I have no screen recording to show it, because GIF screen recording does not show correctly the animation...

Impacts: Geography, geo-country, paintings, babymatch