put some code to use for postgres configuration in database-pg file. got rid of unnecessary validations in customer file. got rid of id field for ItemPurchase model
deleted files that aren't related to current development work, and started views from scratch
added views for various inventory screens and started building out controller and model functionality to support those views (pretty much everything has to do with the item model, though we'll probably have to join with other models or something to get items' expiration dates
got fake data running/connected to views for the fridge section of the inventory. adding view files for the other sections would be trivial, but I wonder if there's a cleaner way to do it, like a layout option from the controller
merged with remote and fixed conflicts in the populator rake task