fix some animation

[warycat]

Hi Yuanlin,

the fireball and ulti animation has some time disappeared. make it can be seen all the time.

the weight center of claw1 and claw2 should not move in the animation.

[warycat]

the fireball and ulti should not scale in the animation. If you want to add some effect to it. It will be something like golden card in heartstone.

Or you can make the fireball rotation 360 degree.

[yxun]

I have fix these problems:

1. removed claw1, claw2 translation effect.
2. Update fireball.anim, now fireball always appear and keep rotating
3. Update ulti.anim, now using new ulti image and light and shade effect. ulti is also always appear and no translatioin now.
4. Update atlas

file names: c1.anim c2.anim fireball.anim // animation name: fire ulti.anim // animation name: ulti