(Bug 5120) Recognize slug URL format for LJ::Entry->new_from_url
Merge pull request #446 from afuna/new_from_url_slug-bug5120

(Bug 5120) Recognize slug URL format for LJ::Entry->new_from_url
Lowercase incoming email addresses

This is in the support category pathway. This will fix it so that
someone who emails "Abuse@" will still get into the Terms of Service
category, f.ex.