Tweak to StreamItemPhotos to include metadata.

This joins in the PhotoFiles table to get width, height, and filesize
info from that table when selecting stream item photos.

It also adds an option to the photo processor to force cropping the
image to a square centered on the original's rect - this is how the
social stream photos are to be displayed in the designs.

Change-Id: I596a4a0be94db0df39d29bc06e1a1684a057a202
2 files changed