Modified basic flask app to populate username and password, pass it to ood and redirect to home page on password authentication

- Pruning of unnecessary files, and alteration form
- Update Readme and minor html tweaks
- Added code to pass username and name variables to ood.
- Added redirect to origin page after success
- Populate user and catch None error if form is submitted blank
- Updated return_url with placeholder value for stability.
- Update __init__.py
- Updated return_url with proper redirect value