Move inline styles to the CSS files (bug #1127945)

These were causing CSP warnings.
Give the crop workers a list of hard links to create (bug #1041720)

This allows the photo cropping to automatically lead to that photo
being selected for one or more email addresses and OpenIDs.
Give auto_crop the same powers as crop_photo

By moving the "common" code to a separate function, we can ensure
that both auto_crop and crop_photo will have the same features.
Add "upload a new one" link to the assign_photo pages (bug 1127724)

The upload and crop pages now take an optional email/openid param
and will end up automatically associating that identifier with the
newly uploaded photo.

As part of this, the embedded parameter was also moved to the
form body when appropriate.
Bump changelog for deployment