OpenID support in LoginSimple

This week I've added some OpenID support to LoginSimple. Please clone the git repository and try it out! The hard part of the whole LoginSimple idea is to make it universal enough. We need people to try to apply it in many different scenarios and give us some feedback.

The test application is in t/lib/TestAppOpenID.pm, it has some tests in t/07-openid-live.t, but you can also run it with perl -Ilib t/lib/script/testappopenid_server.pl and then go to the http://localhost:3000/login page and test it manually.