add database elements for multiple users, portfolios and a shopping cart

[GoogleCodeExporter]

This is where the real fun starts.

Users will have multiple portfolios with independent current dates in the
past. They will use a shopping cart and various technical charts to trade
each day stepping through the history of the exchange, experimenting with
different queries on the database and trading strategies.

When stocks have been selected, they will commit all pending trades from
their shopping basket to their portfolio and progress to the next trading day.

Original issue reported on code.google.com by peter.st...@1ab.ltd.uk on 16 Jan 2010 at 10:39

[GoogleCodeExporter]

This issue was closed by revision r48.

Original comment by peter.st...@1ab.ltd.uk on 19 Jan 2010 at 10:23

• Changed state: Fixed

[GoogleCodeExporter]

This issue was closed by revision r49.

Original comment by peter.st...@1ab.ltd.uk on 19 Jan 2010 at 10:25