Seed Data

[ryanramage]

A lot of apps need/want to seed data into a newly installed app from a master db.

I propose a seed_db property on the app metadata that can contain a couchdb url.

After a user installs an app they would get a text box with the seed_db url, and a description: "The app wants to seed data from the following url" and with buttons "Load Data", "Skip Loading Data".

Also in the app settings, there will be way to control replications from the seed_db. Could be continuous/one time, etc.