Limit the width/height of the preview image to be uploaded.
Limit size of uploaded preview images to 500K, 500x500.  Trim canvas of surrounding transparent pixels for screenshot and preview images.
Update to rturk 2.12.1
Some clean up of desc2scene and image2scene tasks.
Merge branch 'text2scene' of github.com:phgrads/SceneStudio into text2scene
Slight update to instructions.
Have styles be on classes instead of directly on ids.
Checkpoint adding instructions to desc2scene.
More progress on adding instructions to desc2scene task.
Basic working version with instructions for desc2scene and image2scene.
Change number of scenes back to 4.
Show time in results view for desc2scene and image2scene.
Fix display of results.
Stub for recon2scene.
Prettify the MTurk overlays.

Because everyone loves rounded rectangles.
Improve styling of instruction page for tasks.
More minor styling improvements for task instructions.
Update styling for scenes.
Improve style of alert when scene is saved.
More tweaks to list of scenes layout.