Support registration of sites with sub-sub domains
|Reported by:||westi||Owned by:|
A correctly configured subdomain install can also host sub-subdomains.
At the moment we stop people registering them in wpmu_validate_blog_signup by not allowing a dot in the name.
A super admin can edit the site and change it though so they do work.
This should probably be configurable using a filter and default to off.