add admin option to set a title on the top node

Issue Summary

Would you accept a patch that added an option to set your own title on the top node, bypassing the node title? I'd like /sports to always have the title "Sports," instead of "First layout option for Friday's sports section," which is what my node title is likely to be. BTW, thanks for releasing this, and blogging about it on the planet as well. I'd have come up with some weird views hack and hated myself in the morning. :)