78733562 lf optimize photoplus

# [Photo plus images are still huge in SRP](https://www.pivotaltracker.com/story/show/78733562)

- size image on server

I could not get the specs running, but am in the process of cleaning up our bower pkgs + jasmine setups for 10%. 

![x](http://38.media.tumblr.com/fcd8d3627881a61ba2da8e169974dfbb/tumblr_naijtnYkeu1qhccbco1_1280.gif)
After a long investigation and much head scratching, I would say this is entirely data dependent. We are only guaranteed that they are prefixed.

I'll patch PR to handle this from the client - I would love to handle this from the server, but https://github.com/primedia/ag/blob/dev/app/models/listing/accessors/photo_path_writer.rb gets used all over the place and in many cases gets used different ways, accepting values like

- "imgr/e3df361670b75524ebd0751d4a421da0/"
- "/imgr/6365c3dc1989b3f833fb73270dcbbcad/?city=Yakutat&property_name=DPS%20Property%20Six"

In the second example, the metadata is necessary for things like the gallery but not photoplus, which is why I am choosing to handle sizing + path info from the client side.

FWIW I could not find an example where photo.path did not have a trailing slash, but better safe than sorry. Thanks caleb!