Changing auth to use implicit environment.
Removing superfluous patches in test_generate_signed_url_w_expiration_int.
Fix external links in navigation bar
Merge pull request #420 from silvolu/fix-nav-links

Fix external links in navigation bar
Changing description of GOOGLE_APPLICATION_CREDENTIALS.
Merge pull request #419 from dhermes/add-better-auth

Changing auth to use implicit environment.
Update encrypted key for regression tests