Create starter project branch for pinax-images

[grahamu]

This will take the form of a multi-user image review project called Cloudspotter. The basic idea is composing and viewing collections of cloud images. (Yes, "clouds" == the water vapor atmospheric phenomena.) Images will be contained in collections organized by cloud type, i.e. "cumulus", "nimbus", "unknown".

Authenticated user will be able to create new collections, and add/delete images from their collection(s).
Authenticated user will be able to view list of their own collections.

As the project is built out, user will be able to view all other Cloudspotter users and their collections. Users can "like" a collection. Users will be notified when someone has added an image or a collection. Users can invite other people to Cloudspotter.

This project will incorporate pinax-images, pinax-images-panel, pinax-likes, pinax-announcements, pinax-notifications, pinax-invitations and perhaps pinax-testimonials.

This issue addresses part of #26.

[grahamu]

Here is the initial WIP design: https://github.com/grahamu/pinax-starter-projects/tree/images.

[jtauber]

Love it, but should this be a separate repo as a "demo" project rather than a "foundation" project template? /cc @paltman

[grahamu]

On advice of counsel, I have moved this project to a standalone Pinax demo repository named cloudspotting.