Fix choosePhotoInAlbum in KIFUITestActor
fix waitForCellAtIndexPath:inTableView: to wait for the table to scroll and be more reliable
Merge pull request #467 from TeachingChannel/fix-choose-photo-in-album

Fix choosePhotoInAlbum in KIFUITestActor
Merge pull request #475 from paulz/master

make waitForCellAtIndexPath:inTableView: to wait for the table to scroll
use scroll instead of contentOffset to avoid invalid offsets on iOS8