Display of IPv6 subnets in Stork Server GUI

When listing subnets, or already on the home screen, /64 IPv6 subnet display is not too clean, as you can see in the screenshot attached. /64 subnets in an IPv6 network are the most frequent thing, and it would be nice to have a reasonable display of those. Widening the left-most, “Subnet” table column might be a simple way of achieving it. The column should be sized to accommodate a complete /64 designation, eg. 2001:1234:5678:9abc::/64