This also resolves #486.

I renamed the the image import script to be a little more generic since we'll likely be using it for other data imports later for the Gallery.

Changes in this PR.

• Import Site Images

Testing this PR.

1. docker-compose build -- You need to update your docker instance to pull in wget!
2. docker-compose kill && docker-compose rm --all -- remove all old instances
3. docker-compose up -d postgres_host && sleep 10 && docker-compose up -d web
4. docker-compose run web bash
5. cd data_scripts
6. ./get_all.sh -- This might take a bit since it pulls in the images from the site.

Expected Output.

Goto http://localhost:8000/sites/camp-creek/ and you should see the site image on the left.

$ make test
[... test output ...]

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