Convert FloodfillPeerSelector MaskedIPSet to use the one now in util

Fix /16 and /8 lookup
Fix tab highlighted for all lookups
Add sybil points for banlist

stub out lookup by IP

     and 'a40ea9b5f7545281195f00a80e31ae879197e76b'

     and 'd51aa134c2f1b0fe533f79663f1e79dade41bde1'

to the store

fixup main() test, minor cleanups

use on sybil page