Twitter stream to database

The client needs a python script (or set of) that will query the twitter api with a basic set of parameters and save the result to a database. The initial query is to capture all tweets from this account [login to view URL] (but this should be configurable). As part of the project- please list out how it will be completed, this includes * List of tasks required to complete project * Roughly how the code will be structured and basic order it will be developed * Kept log of any important design decisions or constraints * Estimate of delivery time- please supply code samples every few days or weekly as per total estimate * Raise any unforeseen issues immediately that may impact timing so these can be resolved together Functional requirements * configurable time interval of polling the API * configurable search string or user account (initial is @BeijingAir) * removes duplicates in results (i.e. doesn't save the same data 2x to the db) * stored colomns in DB is at minimum "twitter account", "time", "message" * configuration is via a separate JSON, csv, XML etc file * shows db results (say last 24hr) on a basic web page Tech requirements * written python 2.7 or 3.x * runs on Google App Engine (or similar cloud infrastructure) * stores objects in JSON format (dependent on App Engine data store capabilities) i.e. serializes objects into JSON * modular and "readable" code, well formed function/class interfaces, clearly documented Please read the project first and write the word "Understood". Also write your steps and suggestions to complete the project with a short description of what you understood.