Add Favicon!?!?!?!
Merge pull request #48 from davidhao3300/favicon

Add Favicon!?!?!?!
Add oauth database.
Update requirements.txt
Add header blocks for customization.
Authorization implemented. Put client_secrets in density folder.
Make comments make sense.
Ignore client_secrets, satisfy flake8.
Do regex matching. Include Barnard domain.
Add authorization checker.
Do wrappers correctly, satisfy flake8.
Use error instead of data.
flake8 hates me.
PR feedback.