Fixes a crash when targeting iOS8 SDK and App is running on iOS7

Seems like setSelected is called as soon as 
AKCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:NSStringFromClass([AKCollectionViewCell class])
																		   forIndexPath:indexPath];
is called. At this point, there is not yet the font set at the cell.