Handling a parameter to logout flow

[Cantor, Scott]

> The entire UI has to be rewritten because it's not accessible, and there are
> assumptions built into it that people don't want. If you want to propose
> specific patches, you can file them in Jira, but you're possibly better off
> essentially requesting specific features in conjunction with any particular
> proposal, because any patches probably won't apply to whatever we end up
> with after all the contortions.

Issue open around this here, BTW:

https://issues.shibboleth.net/jira/browse/IDP-929

-- Scott