Add vhost module and URL mapping
Add vhost request form and template
Use full path to OCF CSS
Add option to disable HTTPS while testing
Update wording and positioning of vhost form elements
Update vhost form fields and text
Validate vhost form and send email
Add email config to settings template
Add current URL, hostname, form URL to vhost email
Add basic error handling to vhost form
Add success page and redirect for vhost form
Adjust wording of request vhost form
Confirm domain is available in vhost form
Check whether groups have a vhost configured
Move check_email to ocf.utils and use in vhost form
Remove extraneous fields, add comments to vhost form

We don't really need to force the user to check off "we don't already
have a vhost" or "the requested domain isn't already in use" since the
code already checks both of these (and is much more likely to be correct
than the user is).
Merge branch 'vhost'

Adds vhost request form for student groups.