Validate IP address ranges correctly on Alias Bulk Import

The code was there to attempt to validate and implement IP address range lines in Alias Bulk Import e.g.
10.20.0.0-10.21.22.0
should produce a bunch of smaller ranges with appropriate CIDRs.
This fixes the code so IP address ranges actually make it through into the resulting Alias.
Fix display of CIDR/Update Freq in Alias Edit

Fixes #3376. I have no idea what the "^" characters were meant to do, but removing them makes the CIDR/Update Freq value be displayed correctly when editing. Will there be some other side-effect from removing the "^"?