fix(auth): Return Unauthorized when /api/identity call fails
fix(auth): Return Unauthorized when /api/identity call fails

Closes #18

rogerthat-platform/gae-plugin-framework,rogerthat-platform/gae-plugin-framework,rogerthat-platform/gae-plugin-framework,rogerthat-platform/gae-plugin-framework,rogerthat-platform/gae-plugin-framework