Git-moved files into scratch, scripts, or politwit(module) dirs. Organize import statements in seed_tweets.

Created dirs for scratch (old work), scripts (run from command line, offline) and politwit (libraries, modules).
Seed_tweets - tested import from politwit by printing 'hi'
Added Project dir to PYTHONPATH var in env/bin/activate by exporting to shell
Moved old json files to scratch dir