Modify site build on Codeigniter -- 2

Need to add following features to existing codeigniter directory project located here [login to view URL] 1: Search by Zip/City (need search box that can be search by zip or city) 2: User write and rate each pizza place using 5 stars rating system. 3: Import Canadian DB using CSV file and match fields such as business name, address, phone, city, state_provice, zip/postal, category (if any)