Fixed some bugs

So besides making LXReorderableCollectionViewFlowLayout cocoapoda compatible I've removed -alwaysScroll and enhanced the dragges image drawing. I've removed alwaysScroll because it can be done without a custom flowlayout and way more nicely (not just setting the contentSize height +1px). Also it always draws the cell to a translucent context. The collection view cells are opaque by default making it smoother to scroll.

I hope you'll merge this,
Laurin