Actually import the first 100 photos from Flickr.

Currently this just imports the title, description, and image data.

Change-Id: I95de17cddb0ac18eec05f8ee288764b04cd7f406
Merge "Actually import the first 100 photos from Flickr."
search: remove MIME from DescribedBlob; fix Handler tests.

Change-Id: I2d92155e3446325520d91379ac24becef49ca56f