Depricated the get_unique method for users
Updated database table structure; added comments to tables; added new type reference tables for users and grant_items (needed for revenue/expenditure) and renamed existing grants_items_types to grants_items_categories; small changes.
Basic get_active method working for general model.
Updated documentation and decided that get_active() will not pull data from secondary tables due to the one to many relationship of entries to secondary table elements, which MySQL will not process cleanly.
Updated TODO