Fix transition bug with persistent images

[NeeEoo]

Also optimized the fade transition, by scaling the 0 angle version

[NeeEoo]

Should probably be better to be safe, with having it set antialiasing to false, because it might change on different platforms like between windows, mac, linux, html, flash, and i cant really test that

[NeeEoo]

Not sure if i should add sprite.antialiasing = true; in the diagonal wipe, since that one has no 1px wide scaling

I also placed the no antialiasing to affect the other wipes, since they are also optimized with 1px and scaled

[Geokureli]

Thanks!