Fixes EZP-20702: MatchOrder=host_uri matches uri-part greedily

Currently, the HostUri-Matching is greedy concerning hyphens, so it a call to:

http://m.example.com/content-is-king

ends up in the content_mobile-Siteaccess, displaying an error page.

Expected behavoir would be to display the article in the default siteaccess.