gittip/www.gittip.com — pull request #1998 by duckinator (2014-02-08 20:23:59+00:00)
Title: Make linkify() case insensitive.

"The scheme and host components of the URL are case-insensitive." - http://en.wikipedia.org/wiki/URL_normalization#Normalizations_that_preserve_semantics

Fixes the issue found on @tkwidmer's Gittip profile with the link `Http://refugerestrooms.org`.

Also added tests for linkify().