Don't rely on the github api for kudos send

[jasonrhaas]

For example, the Kudos Send (Also Tips send) relies on the Github API to pull emails every time you do a Send. If the Github API bombs out it just hangs there.

Would be good to have a timeout or a try/except to catch the github api issues and skip over the "find email" pull if there is an error.

Also it could be that the API key is not being read properly.