Originate/flms — pull request #19 by dhawt (2013-04-04 20:12:32+00:00)
Title: Image layers have previews

https://www.pivotaltracker.com/projects/709791/stories/47478459

Clean up carrierwave config file.
Show thumbnail previews in block edit page.
Show small preview in image layer edit screen.
Show start and end scroll positions in block edit page.