* controlplane: add request id to all error pages
- use a single http error handler for both envoy and go control plane
- add http lib style status text for our custom statuses.
Signed-off-by: Bobby DeSimone <bobbydesimone@gmail.com>
- authenticate: add cors preflight check support for sign_in endpoint
- internal/httputil: indicate responses that originate from pomerium vs the app
- proxy: detect XHR requests and do not redirect on failure.
- authenticate: removed default session duration; should be maintained out of band with rpc.
