A major update to this function allows it to actually autofill the
certificate information again! I believe LinkedIn changed their API
and we never updated our end. This fixes that!
It should help catch unicode encoding problems earlier.
This also updates python-saml dependency to a version that includes a
patch for unicode strings.
Add client-side analytics event for LinkedIn Add to Profile button click.
Add management command for generating certs for testing.
Update styling of the certificate messages.
