Revert "Structure of Username data had changed and broken top tweeter chart"
Seed data was the problem, not the app.

This reverts commit b6de6b46291e9553f177b9b7710c1c2da75dc602.
Revert "Structure of Username data had changed so update tweets index template accordingly"
seed data was the problem, not the app

This reverts commit 5ec12f9a61a6485243056cb1c6fbed666bad21f7.