UI suggestion: make 'supernet' information optional

[teunvink]

The supernet table on the results page appears to generate confusion for some users, especially with large supernets with a lot of delegations which possibly have issues, but aren't related to the actual prefix being checked.

Making showing this information optional and not the default could help.

[teunvink]

Possibly it helps to reverse the sort order for the supernets, starting with the most specific prefix.

[mxsasha]

Discussion: under "directly overlapping", when the search is for IP/prefix, sort the table by prefix size, most specific first.