Temporarily disable photo upload error handling

Need to debug this crap on ec2.  Need a better way to debug, and to
deploy temporary changes like this.
Need to manually install libjpeg.
Import Image directly from PIL

This avoids potential conflict with PIL and Pillow, and fixes the
thumbnail generation crash, when deployed.  Also, add back error
handling to image upload.  With this, image upload and thumbs work when
deployed.