investigate using dsimport as alternate way to integrate user photo

[mroth]

Versions of MacOSX >=10.9 seem to vastly prefer having the user avatar set via JPEGPhoto binary blob record versus UserPicture key/value pair for filename, as evidenced by any time you try to do anything with them in that control panel it automatically converts them.

It certainly looks messier, but we may be able to set that directly, ala http://stackoverflow.com/a/9791163, which would bring us closer to emulating exactly how it would be set if the user just dragged a photo in via the System Preferences w/r/t state.

Possibly OCD, but yeah.